feat(ui): 🎨 Implement schema and table management screens

* Add schema management screen with list and editor * Implement table management screen with list and editor * Create data operations for schema and table management * Define UI rules and guidelines for consistency * Ensure circular tab navigation and keyboard shortcuts * Add forms for creating and editing schemas and tables * Implement confirmation dialogs for destructive actions
2026-01-04 18:29:29 +02:00
parent 355f0f918f
commit 1795eb64d1
19 changed files with 3180 additions and 1 deletions
--- a/TODO.md
+++ b/TODO.md
@@ -22,6 +22,17 @@
 - [✔️] GraphQL schema generation


+## UI 
+- [✔️] Basic UI (I went with tview)
+- [✔️] Save / Load Database
+- [✔️] Schemas / Domains / Tables
+- [  ] Add Relations
+- [  ] Add Indexes
+- [  ] Add Views
+- [  ] Add Sequences
+- [  ] Add Scripts
+- [  ] Domain / Table Assignment
+
 ## Documentation
 - [ ] API documentation (godoc)
 - [ ] Usage examples for each format combination
--- a/cmd/relspec/edit.go
+++ b/cmd/relspec/edit.go
@@ -0,0 +1,334 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"strings"
+
+	"github.com/spf13/cobra"
+
+	"git.warky.dev/wdevs/relspecgo/pkg/models"
+	"git.warky.dev/wdevs/relspecgo/pkg/readers"
+	"git.warky.dev/wdevs/relspecgo/pkg/readers/bun"
+	"git.warky.dev/wdevs/relspecgo/pkg/readers/dbml"
+	"git.warky.dev/wdevs/relspecgo/pkg/readers/dctx"
+	"git.warky.dev/wdevs/relspecgo/pkg/readers/drawdb"
+	"git.warky.dev/wdevs/relspecgo/pkg/readers/drizzle"
+	"git.warky.dev/wdevs/relspecgo/pkg/readers/gorm"
+	"git.warky.dev/wdevs/relspecgo/pkg/readers/graphql"
+	"git.warky.dev/wdevs/relspecgo/pkg/readers/json"
+	"git.warky.dev/wdevs/relspecgo/pkg/readers/pgsql"
+	"git.warky.dev/wdevs/relspecgo/pkg/readers/prisma"
+	"git.warky.dev/wdevs/relspecgo/pkg/readers/typeorm"
+	"git.warky.dev/wdevs/relspecgo/pkg/readers/yaml"
+	"git.warky.dev/wdevs/relspecgo/pkg/ui"
+	"git.warky.dev/wdevs/relspecgo/pkg/writers"
+	wbun "git.warky.dev/wdevs/relspecgo/pkg/writers/bun"
+	wdbml "git.warky.dev/wdevs/relspecgo/pkg/writers/dbml"
+	wdctx "git.warky.dev/wdevs/relspecgo/pkg/writers/dctx"
+	wdrawdb "git.warky.dev/wdevs/relspecgo/pkg/writers/drawdb"
+	wdrizzle "git.warky.dev/wdevs/relspecgo/pkg/writers/drizzle"
+	wgorm "git.warky.dev/wdevs/relspecgo/pkg/writers/gorm"
+	wgraphql "git.warky.dev/wdevs/relspecgo/pkg/writers/graphql"
+	wjson "git.warky.dev/wdevs/relspecgo/pkg/writers/json"
+	wpgsql "git.warky.dev/wdevs/relspecgo/pkg/writers/pgsql"
+	wprisma "git.warky.dev/wdevs/relspecgo/pkg/writers/prisma"
+	wtypeorm "git.warky.dev/wdevs/relspecgo/pkg/writers/typeorm"
+	wyaml "git.warky.dev/wdevs/relspecgo/pkg/writers/yaml"
+)
+
+var (
+	editSourceType   string
+	editSourcePath   string
+	editSourceConn   string
+	editTargetType   string
+	editTargetPath   string
+	editSchemaFilter string
+)
+
+var editCmd = &cobra.Command{
+	Use:   "edit",
+	Short: "Edit database schema interactively with TUI",
+	Long: `Edit database schemas from various formats using an interactive terminal UI.
+
+Allows you to:
+  - List and navigate schemas and tables
+  - Create, edit, and delete schemas
+  - Create, edit, and delete tables
+  - Add, edit, and delete columns
+  - Set table and column properties
+  - Add constraints, indexes, and relationships
+
+Supports reading from and writing to all supported formats:
+  Input formats:
+    - dbml: DBML schema files
+    - dctx: DCTX schema files
+    - drawdb: DrawDB JSON files
+    - graphql: GraphQL schema files (.graphql, SDL)
+    - json: JSON database schema
+    - yaml: YAML database schema
+    - gorm: GORM model files (Go, file or directory)
+    - bun: Bun model files (Go, file or directory)
+    - drizzle: Drizzle ORM schema files (TypeScript, file or directory)
+    - prisma: Prisma schema files (.prisma)
+    - typeorm: TypeORM entity files (TypeScript)
+    - pgsql: PostgreSQL database (live connection)
+
+  Output formats:
+    - dbml: DBML schema files
+    - dctx: DCTX schema files
+    - drawdb: DrawDB JSON files
+    - graphql: GraphQL schema files (.graphql, SDL)
+    - json: JSON database schema
+    - yaml: YAML database schema
+    - gorm: GORM model files (Go)
+    - bun: Bun model files (Go)
+    - drizzle: Drizzle ORM schema files (TypeScript)
+    - prisma: Prisma schema files (.prisma)
+    - typeorm: TypeORM entity files (TypeScript)
+    - pgsql: PostgreSQL SQL schema
+
+PostgreSQL Connection String Examples:
+  postgres://username:password@localhost:5432/database_name
+  postgres://username:password@localhost/database_name
+  postgresql://user:pass@host:5432/dbname?sslmode=disable
+  postgresql://user:pass@host/dbname?sslmode=require
+  host=localhost port=5432 user=username password=pass dbname=mydb sslmode=disable
+
+Examples:
+  # Edit a DBML schema file
+  relspec edit --from dbml --from-path schema.dbml --to dbml --to-path schema.dbml
+
+  # Edit a PostgreSQL database
+  relspec edit --from pgsql --from-conn "postgres://user:pass@localhost/mydb" \
+               --to pgsql --to-conn "postgres://user:pass@localhost/mydb"
+
+  # Edit JSON schema and output to GORM
+  relspec edit --from json --from-path db.json --to gorm --to-path models/
+
+  # Edit GORM models in place
+  relspec edit --from gorm --from-path ./models --to gorm --to-path ./models`,
+	RunE: runEdit,
+}
+
+func init() {
+	editCmd.Flags().StringVar(&editSourceType, "from", "", "Source format (dbml, dctx, drawdb, graphql, json, yaml, gorm, bun, drizzle, prisma, typeorm, pgsql)")
+	editCmd.Flags().StringVar(&editSourcePath, "from-path", "", "Source file path (for file-based formats)")
+	editCmd.Flags().StringVar(&editSourceConn, "from-conn", "", "Source connection string (for database formats)")
+	editCmd.Flags().StringVar(&editTargetType, "to", "", "Target format (dbml, dctx, drawdb, graphql, json, yaml, gorm, bun, drizzle, prisma, typeorm, pgsql)")
+	editCmd.Flags().StringVar(&editTargetPath, "to-path", "", "Target file path (for file-based formats)")
+	editCmd.Flags().StringVar(&editSchemaFilter, "schema", "", "Filter to a specific schema by name")
+
+	// Flags are now optional - if not provided, UI will prompt for load/save options
+}
+
+func runEdit(cmd *cobra.Command, args []string) error {
+	fmt.Fprintf(os.Stderr, "\n=== RelSpec Schema Editor ===\n")
+	fmt.Fprintf(os.Stderr, "Started at: %s\n\n", getCurrentTimestamp())
+
+	var db *models.Database
+	var loadConfig *ui.LoadConfig
+	var saveConfig *ui.SaveConfig
+	var err error
+
+	// Check if source parameters are provided
+	if editSourceType != "" {
+		// Read source database
+		fmt.Fprintf(os.Stderr, "[1/3] Reading source schema...\n")
+		fmt.Fprintf(os.Stderr, "      Format: %s\n", editSourceType)
+		if editSourcePath != "" {
+			fmt.Fprintf(os.Stderr, "      Path:   %s\n", editSourcePath)
+		}
+		if editSourceConn != "" {
+			fmt.Fprintf(os.Stderr, "      Conn:   %s\n", maskPassword(editSourceConn))
+		}
+
+		db, err = readDatabaseForEdit(editSourceType, editSourcePath, editSourceConn, "Source")
+		if err != nil {
+			return fmt.Errorf("failed to read source: %w", err)
+		}
+
+		// Apply schema filter if specified
+		if editSchemaFilter != "" {
+			db = filterDatabaseBySchema(db, editSchemaFilter)
+		}
+
+		fmt.Fprintf(os.Stderr, "      ✓ Successfully read database '%s'\n", db.Name)
+		fmt.Fprintf(os.Stderr, "      Found: %d schema(s)\n", len(db.Schemas))
+
+		totalTables := 0
+		for _, schema := range db.Schemas {
+			totalTables += len(schema.Tables)
+		}
+		fmt.Fprintf(os.Stderr, "      Found: %d table(s)\n\n", totalTables)
+
+		// Store load config
+		loadConfig = &ui.LoadConfig{
+			SourceType: editSourceType,
+			FilePath:   editSourcePath,
+			ConnString: editSourceConn,
+		}
+	} else {
+		// No source parameters provided, UI will show load screen
+		fmt.Fprintf(os.Stderr, "[1/2] No source specified, editor will prompt for database\n\n")
+	}
+
+	// Store save config if target parameters are provided
+	if editTargetType != "" {
+		saveConfig = &ui.SaveConfig{
+			TargetType: editTargetType,
+			FilePath:   editTargetPath,
+		}
+	}
+
+	// Launch interactive TUI
+	if editSourceType != "" {
+		fmt.Fprintf(os.Stderr, "[2/3] Launching interactive editor...\n")
+	} else {
+		fmt.Fprintf(os.Stderr, "[2/2] Launching interactive editor...\n")
+	}
+	fmt.Fprintf(os.Stderr, "      Use arrow keys and shortcuts to navigate\n")
+	fmt.Fprintf(os.Stderr, "      Press ? for help\n\n")
+
+	editor := ui.NewSchemaEditorWithConfigs(db, loadConfig, saveConfig)
+	if err := editor.Run(); err != nil {
+		return fmt.Errorf("editor failed: %w", err)
+	}
+
+	// Only write to output if target parameters were provided and database was loaded from command line
+	if editTargetType != "" && editSourceType != "" && db != nil {
+		fmt.Fprintf(os.Stderr, "[3/3] Writing changes to output...\n")
+		fmt.Fprintf(os.Stderr, "      Format: %s\n", editTargetType)
+		if editTargetPath != "" {
+			fmt.Fprintf(os.Stderr, "      Path:   %s\n", editTargetPath)
+		}
+
+		// Get the potentially modified database from the editor
+		err = writeDatabaseForEdit(editTargetType, editTargetPath, "", editor.GetDatabase(), "Target")
+		if err != nil {
+			return fmt.Errorf("failed to write output: %w", err)
+		}
+
+		fmt.Fprintf(os.Stderr, "      ✓ Successfully written database\n")
+	}
+
+	fmt.Fprintf(os.Stderr, "\n=== Edit complete ===\n")
+
+	return nil
+}
+
+func readDatabaseForEdit(dbType, filePath, connString, label string) (*models.Database, error) {
+	var reader readers.Reader
+
+	switch strings.ToLower(dbType) {
+	case "dbml":
+		if filePath == "" {
+			return nil, fmt.Errorf("%s: file path is required for DBML format", label)
+		}
+		reader = dbml.NewReader(&readers.ReaderOptions{FilePath: filePath})
+	case "dctx":
+		if filePath == "" {
+			return nil, fmt.Errorf("%s: file path is required for DCTX format", label)
+		}
+		reader = dctx.NewReader(&readers.ReaderOptions{FilePath: filePath})
+	case "drawdb":
+		if filePath == "" {
+			return nil, fmt.Errorf("%s: file path is required for DrawDB format", label)
+		}
+		reader = drawdb.NewReader(&readers.ReaderOptions{FilePath: filePath})
+	case "graphql":
+		if filePath == "" {
+			return nil, fmt.Errorf("%s: file path is required for GraphQL format", label)
+		}
+		reader = graphql.NewReader(&readers.ReaderOptions{FilePath: filePath})
+	case "json":
+		if filePath == "" {
+			return nil, fmt.Errorf("%s: file path is required for JSON format", label)
+		}
+		reader = json.NewReader(&readers.ReaderOptions{FilePath: filePath})
+	case "yaml":
+		if filePath == "" {
+			return nil, fmt.Errorf("%s: file path is required for YAML format", label)
+		}
+		reader = yaml.NewReader(&readers.ReaderOptions{FilePath: filePath})
+	case "gorm":
+		if filePath == "" {
+			return nil, fmt.Errorf("%s: file path is required for GORM format", label)
+		}
+		reader = gorm.NewReader(&readers.ReaderOptions{FilePath: filePath})
+	case "bun":
+		if filePath == "" {
+			return nil, fmt.Errorf("%s: file path is required for Bun format", label)
+		}
+		reader = bun.NewReader(&readers.ReaderOptions{FilePath: filePath})
+	case "drizzle":
+		if filePath == "" {
+			return nil, fmt.Errorf("%s: file path is required for Drizzle format", label)
+		}
+		reader = drizzle.NewReader(&readers.ReaderOptions{FilePath: filePath})
+	case "prisma":
+		if filePath == "" {
+			return nil, fmt.Errorf("%s: file path is required for Prisma format", label)
+		}
+		reader = prisma.NewReader(&readers.ReaderOptions{FilePath: filePath})
+	case "typeorm":
+		if filePath == "" {
+			return nil, fmt.Errorf("%s: file path is required for TypeORM format", label)
+		}
+		reader = typeorm.NewReader(&readers.ReaderOptions{FilePath: filePath})
+	case "pgsql":
+		if connString == "" {
+			return nil, fmt.Errorf("%s: connection string is required for PostgreSQL format", label)
+		}
+		reader = pgsql.NewReader(&readers.ReaderOptions{ConnectionString: connString})
+	default:
+		return nil, fmt.Errorf("%s: unsupported format: %s", label, dbType)
+	}
+
+	db, err := reader.ReadDatabase()
+	if err != nil {
+		return nil, fmt.Errorf("%s: %w", label, err)
+	}
+
+	return db, nil
+}
+
+func writeDatabaseForEdit(dbType, filePath, connString string, db *models.Database, label string) error {
+	var writer writers.Writer
+
+	switch strings.ToLower(dbType) {
+	case "dbml":
+		writer = wdbml.NewWriter(&writers.WriterOptions{OutputPath: filePath})
+	case "dctx":
+		writer = wdctx.NewWriter(&writers.WriterOptions{OutputPath: filePath})
+	case "drawdb":
+		writer = wdrawdb.NewWriter(&writers.WriterOptions{OutputPath: filePath})
+	case "graphql":
+		writer = wgraphql.NewWriter(&writers.WriterOptions{OutputPath: filePath})
+	case "json":
+		writer = wjson.NewWriter(&writers.WriterOptions{OutputPath: filePath})
+	case "yaml":
+		writer = wyaml.NewWriter(&writers.WriterOptions{OutputPath: filePath})
+	case "gorm":
+		writer = wgorm.NewWriter(&writers.WriterOptions{OutputPath: filePath})
+	case "bun":
+		writer = wbun.NewWriter(&writers.WriterOptions{OutputPath: filePath})
+	case "drizzle":
+		writer = wdrizzle.NewWriter(&writers.WriterOptions{OutputPath: filePath})
+	case "prisma":
+		writer = wprisma.NewWriter(&writers.WriterOptions{OutputPath: filePath})
+	case "typeorm":
+		writer = wtypeorm.NewWriter(&writers.WriterOptions{OutputPath: filePath})
+	case "pgsql":
+		writer = wpgsql.NewWriter(&writers.WriterOptions{OutputPath: filePath})
+	default:
+		return fmt.Errorf("%s: unsupported format: %s", label, dbType)
+	}
+
+	err := writer.WriteDatabase(db)
+	if err != nil {
+		return fmt.Errorf("%s: %w", label, err)
+	}
+
+	return nil
+}
--- a/cmd/relspec/root.go
+++ b/cmd/relspec/root.go
@@ -21,4 +21,5 @@ func init() {
 	rootCmd.AddCommand(inspectCmd)
 	rootCmd.AddCommand(scriptsCmd)
 	rootCmd.AddCommand(templCmd)
+	rootCmd.AddCommand(editCmd)
 }
--- a/pkg/models/models.go
+++ b/pkg/models/models.go
@@ -4,7 +4,10 @@
 // intermediate representation for converting between various database schema formats.
 package models

-import "strings"
+import (
+	"strings"
+	"time"
+)

 // DatabaseType represents the type of database system.
 type DatabaseType string
@@ -26,6 +29,7 @@ type Database struct {
 	DatabaseType    DatabaseType `json:"database_type,omitempty" yaml:"database_type,omitempty" xml:"database_type,omitempty"`
 	DatabaseVersion string       `json:"database_version,omitempty" yaml:"database_version,omitempty" xml:"database_version,omitempty"`
 	SourceFormat    string       `json:"source_format,omitempty" yaml:"source_format,omitempty" xml:"source_format,omitempty"` // Source Format of the database.
+	UpdatedAt       string       `json:"updatedat,omitempty" yaml:"updatedat,omitempty" xml:"updatedat,omitempty"`
 }

 // SQLName returns the database name in lowercase for SQL compatibility.
@@ -33,6 +37,11 @@ func (d *Database) SQLName() string {
 	return strings.ToLower(d.Name)
 }

+// UpdateDate sets the UpdatedAt field to the current time in RFC3339 format.
+func (d *Database) UpdateDate() {
+	d.UpdatedAt = time.Now().Format(time.RFC3339)
+}
+
 // Domain represents a logical business domain grouping multiple tables from potentially different schemas.
 // Domains allow for organizing database tables by functional areas (e.g., authentication, user data, financial).
 type Domain struct {
@@ -76,6 +85,15 @@ type Schema struct {
 	RefDatabase *Database         `json:"-" yaml:"-" xml:"-"` // Excluded to prevent circular references
 	Relations   []*Relationship   `json:"relations,omitempty" yaml:"relations,omitempty" xml:"-"`
 	Enums       []*Enum           `json:"enums,omitempty" yaml:"enums,omitempty" xml:"enums"`
+	UpdatedAt   string            `json:"updatedat,omitempty" yaml:"updatedat,omitempty" xml:"updatedat,omitempty"`
+}
+
+// UpdaUpdateDateted sets the UpdatedAt field to the current time in RFC3339 format.
+func (d *Schema) UpdateDate() {
+	d.UpdatedAt = time.Now().Format(time.RFC3339)
+	if d.RefDatabase != nil {
+		d.RefDatabase.UpdateDate()
+	}
 }

 // SQLName returns the schema name in lowercase for SQL compatibility.
@@ -98,6 +116,15 @@ type Table struct {
 	Metadata      map[string]any           `json:"metadata,omitempty" yaml:"metadata,omitempty" xml:"-"`
 	Sequence      uint                     `json:"sequence,omitempty" yaml:"sequence,omitempty" xml:"sequence,omitempty"`
 	RefSchema     *Schema                  `json:"-" yaml:"-" xml:"-"` // Excluded to prevent circular references
+	UpdatedAt     string                   `json:"updatedat,omitempty" yaml:"updatedat,omitempty" xml:"updatedat,omitempty"`
+}
+
+// UpdateDate sets the UpdatedAt field to the current time in RFC3339 format.
+func (d *Table) UpdateDate() {
+	d.UpdatedAt = time.Now().Format(time.RFC3339)
+	if d.RefSchema != nil {
+		d.RefSchema.UpdateDate()
+	}
 }

 // SQLName returns the table name in lowercase for SQL compatibility.
--- a/pkg/ui/column_dataops.go
+++ b/pkg/ui/column_dataops.go
@@ -0,0 +1,95 @@
+package ui
+
+import "git.warky.dev/wdevs/relspecgo/pkg/models"
+
+// Column data operations - business logic for column management
+
+// CreateColumn creates a new column and adds it to a table
+func (se *SchemaEditor) CreateColumn(schemaIndex, tableIndex int, name, dataType string, isPrimaryKey, isNotNull bool) *models.Column {
+	table := se.GetTable(schemaIndex, tableIndex)
+	if table == nil {
+		return nil
+	}
+
+	if table.Columns == nil {
+		table.Columns = make(map[string]*models.Column)
+	}
+
+	newColumn := &models.Column{
+		Name:         name,
+		Type:         dataType,
+		IsPrimaryKey: isPrimaryKey,
+		NotNull:      isNotNull,
+	}
+	table.UpdateDate()
+	table.Columns[name] = newColumn
+	return newColumn
+}
+
+// UpdateColumn updates an existing column's properties
+func (se *SchemaEditor) UpdateColumn(schemaIndex, tableIndex int, oldName, newName, dataType string, isPrimaryKey, isNotNull bool, defaultValue interface{}, description string) bool {
+	table := se.GetTable(schemaIndex, tableIndex)
+	if table == nil {
+		return false
+	}
+
+	column, exists := table.Columns[oldName]
+	if !exists {
+		return false
+	}
+
+	table.UpdateDate()
+
+	// If name changed, remove old entry and create new one
+	if oldName != newName {
+		delete(table.Columns, oldName)
+		column.Name = newName
+		table.Columns[newName] = column
+	}
+
+	// Update properties
+	column.Type = dataType
+	column.IsPrimaryKey = isPrimaryKey
+	column.NotNull = isNotNull
+	column.Default = defaultValue
+	column.Description = description
+
+	return true
+}
+
+// DeleteColumn removes a column from a table
+func (se *SchemaEditor) DeleteColumn(schemaIndex, tableIndex int, columnName string) bool {
+	table := se.GetTable(schemaIndex, tableIndex)
+	if table == nil {
+		return false
+	}
+
+	if _, exists := table.Columns[columnName]; !exists {
+		return false
+	}
+
+	table.UpdateDate()
+
+	delete(table.Columns, columnName)
+	return true
+}
+
+// GetColumn returns a column by name
+func (se *SchemaEditor) GetColumn(schemaIndex, tableIndex int, columnName string) *models.Column {
+	table := se.GetTable(schemaIndex, tableIndex)
+	if table == nil {
+		return nil
+	}
+
+	return table.Columns[columnName]
+}
+
+// GetAllColumns returns all columns in a table
+func (se *SchemaEditor) GetAllColumns(schemaIndex, tableIndex int) map[string]*models.Column {
+	table := se.GetTable(schemaIndex, tableIndex)
+	if table == nil {
+		return nil
+	}
+
+	return table.Columns
+}
--- a/pkg/ui/column_screens.go
+++ b/pkg/ui/column_screens.go
@@ -0,0 +1,208 @@
+package ui
+
+import (
+	"fmt"
+
+	"github.com/gdamore/tcell/v2"
+	"github.com/rivo/tview"
+
+	"git.warky.dev/wdevs/relspecgo/pkg/models"
+)
+
+// showColumnEditor shows editor for a specific column
+func (se *SchemaEditor) showColumnEditor(schemaIndex, tableIndex, colIndex int, column *models.Column) {
+	form := tview.NewForm()
+
+	// Store original name to handle renames
+	originalName := column.Name
+
+	// Local variables to collect changes
+	newName := column.Name
+	newType := column.Type
+	newIsPK := column.IsPrimaryKey
+	newIsNotNull := column.NotNull
+	newDefault := column.Default
+	newDescription := column.Description
+
+	// Column type options: PostgreSQL, MySQL, SQL Server, and common SQL types
+	columnTypes := []string{
+		// Numeric Types
+		"SMALLINT", "INTEGER", "BIGINT", "INT", "TINYINT", "FLOAT", "REAL", "DOUBLE PRECISION",
+		"DECIMAL(10,2)", "NUMERIC", "DECIMAL", "NUMERIC(10,2)",
+		// Character Types
+		"CHAR", "VARCHAR", "VARCHAR(255)", "TEXT", "NCHAR", "NVARCHAR", "NVARCHAR(255)",
+		// Boolean
+		"BOOLEAN", "BOOL", "BIT",
+		// Date/Time Types
+		"DATE", "TIME", "TIMESTAMP", "TIMESTAMP WITH TIME ZONE", "INTERVAL",
+		"DATETIME", "DATETIME2", "DATEFIRST",
+		// UUID and JSON
+		"UUID", "GUID", "JSON", "JSONB",
+		// Binary Types
+		"BYTEA", "BLOB", "IMAGE", "VARBINARY", "VARBINARY(MAX)", "BINARY",
+		// PostgreSQL Special Types
+		"int4range", "int8range", "numrange", "tsrange", "tstzrange", "daterange",
+		"HSTORE", "CITEXT", "INET", "MACADDR", "POINT", "LINE", "LSEG", "BOX", "PATH", "POLYGON", "CIRCLE",
+		// Array Types
+		"INTEGER ARRAY", "VARCHAR ARRAY", "TEXT ARRAY", "BIGINT ARRAY",
+		// MySQL Specific
+		"MEDIUMINT", "DOUBLE", "FLOAT(10,2)",
+		// SQL Server Specific
+		"MONEY", "SMALLMONEY", "SQL_VARIANT",
+	}
+	selectedTypeIndex := 0
+
+	// Add existing type if not already in the list
+	typeExists := false
+	for i, opt := range columnTypes {
+		if opt == column.Type {
+			selectedTypeIndex = i
+			typeExists = true
+			break
+		}
+	}
+	if !typeExists && column.Type != "" {
+		columnTypes = append(columnTypes, column.Type)
+		selectedTypeIndex = len(columnTypes) - 1
+	}
+
+	form.AddInputField("Column Name", column.Name, 40, nil, func(value string) {
+		newName = value
+	})
+
+	form.AddDropDown("Type", columnTypes, selectedTypeIndex, func(option string, index int) {
+		newType = option
+	})
+
+	form.AddCheckbox("Primary Key", column.IsPrimaryKey, func(checked bool) {
+		newIsPK = checked
+	})
+
+	form.AddCheckbox("Not Null", column.NotNull, func(checked bool) {
+		newIsNotNull = checked
+	})
+
+	defaultStr := ""
+	if column.Default != nil {
+		defaultStr = fmt.Sprintf("%v", column.Default)
+	}
+	form.AddInputField("Default Value", defaultStr, 40, nil, func(value string) {
+		newDefault = value
+	})
+
+	form.AddTextArea("Description", column.Description, 40, 5, 0, func(value string) {
+		newDescription = value
+	})
+
+	form.AddButton("Save", func() {
+		// Apply changes using dataops
+		se.UpdateColumn(schemaIndex, tableIndex, originalName, newName, newType, newIsPK, newIsNotNull, newDefault, newDescription)
+
+		se.pages.RemovePage("column-editor")
+		se.pages.SwitchToPage("table-editor")
+	})
+
+	form.AddButton("Delete", func() {
+		se.showDeleteColumnConfirm(schemaIndex, tableIndex, originalName)
+	})
+
+	form.AddButton("Back", func() {
+		// Discard changes - don't apply them
+		se.pages.RemovePage("column-editor")
+		se.pages.SwitchToPage("table-editor")
+	})
+
+	form.SetBorder(true).SetTitle(" Edit Column ").SetTitleAlign(tview.AlignLeft)
+	form.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
+		if event.Key() == tcell.KeyEscape {
+			se.showExitConfirmation("column-editor", "table-editor")
+			return nil
+		}
+		return event
+	})
+
+	se.pages.AddPage("column-editor", form, true, true)
+}
+
+// showNewColumnDialog shows dialog to create a new column
+func (se *SchemaEditor) showNewColumnDialog(schemaIndex, tableIndex int) {
+	form := tview.NewForm()
+
+	columnName := ""
+	dataType := "VARCHAR(255)"
+
+	// Column type options: PostgreSQL, MySQL, SQL Server, and common SQL types
+	columnTypes := []string{
+		// Numeric Types
+		"SMALLINT", "INTEGER", "BIGINT", "INT", "TINYINT", "FLOAT", "REAL", "DOUBLE PRECISION",
+		"DECIMAL(10,2)", "NUMERIC", "DECIMAL", "NUMERIC(10,2)",
+		// Character Types
+		"CHAR", "VARCHAR", "VARCHAR(255)", "TEXT", "NCHAR", "NVARCHAR", "NVARCHAR(255)",
+		// Boolean
+		"BOOLEAN", "BOOL", "BIT",
+		// Date/Time Types
+		"DATE", "TIME", "TIMESTAMP", "TIMESTAMP WITH TIME ZONE", "INTERVAL",
+		"DATETIME", "DATETIME2", "DATEFIRST",
+		// UUID and JSON
+		"UUID", "GUID", "JSON", "JSONB",
+		// Binary Types
+		"BYTEA", "BLOB", "IMAGE", "VARBINARY", "VARBINARY(MAX)", "BINARY",
+		// PostgreSQL Special Types
+		"int4range", "int8range", "numrange", "tsrange", "tstzrange", "daterange",
+		"HSTORE", "CITEXT", "INET", "MACADDR", "POINT", "LINE", "LSEG", "BOX", "PATH", "POLYGON", "CIRCLE",
+		// Array Types
+		"INTEGER ARRAY", "VARCHAR ARRAY", "TEXT ARRAY", "BIGINT ARRAY",
+		// MySQL Specific
+		"MEDIUMINT", "DOUBLE", "FLOAT(10,2)",
+		// SQL Server Specific
+		"MONEY", "SMALLMONEY", "SQL_VARIANT",
+	}
+	selectedTypeIndex := 0
+
+	form.AddInputField("Column Name", "", 40, nil, func(value string) {
+		columnName = value
+	})
+
+	form.AddDropDown("Data Type", columnTypes, selectedTypeIndex, func(option string, index int) {
+		dataType = option
+	})
+
+	form.AddCheckbox("Primary Key", false, nil)
+	form.AddCheckbox("Not Null", false, nil)
+	form.AddCheckbox("Unique", false, nil)
+
+	form.AddButton("Save", func() {
+		if columnName == "" {
+			return
+		}
+
+		// Get form values
+		isPK := form.GetFormItemByLabel("Primary Key").(*tview.Checkbox).IsChecked()
+		isNotNull := form.GetFormItemByLabel("Not Null").(*tview.Checkbox).IsChecked()
+
+		se.CreateColumn(schemaIndex, tableIndex, columnName, dataType, isPK, isNotNull)
+
+		table := se.db.Schemas[schemaIndex].Tables[tableIndex]
+		se.pages.RemovePage("new-column")
+		se.pages.RemovePage("table-editor")
+		se.showTableEditor(schemaIndex, tableIndex, table)
+	})
+
+	form.AddButton("Back", func() {
+		table := se.db.Schemas[schemaIndex].Tables[tableIndex]
+		se.pages.RemovePage("new-column")
+		se.pages.RemovePage("table-editor")
+		se.showTableEditor(schemaIndex, tableIndex, table)
+	})
+
+	form.SetBorder(true).SetTitle(" New Column ").SetTitleAlign(tview.AlignLeft)
+	form.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
+		if event.Key() == tcell.KeyEscape {
+			se.showExitConfirmation("new-column", "table-editor")
+			return nil
+		}
+		return event
+	})
+
+	se.pages.AddPage("new-column", form, true, true)
+}
--- a/pkg/ui/database_dataops.go
+++ b/pkg/ui/database_dataops.go
@@ -0,0 +1,15 @@
+package ui
+
+import (
+	"git.warky.dev/wdevs/relspecgo/pkg/models"
+)
+
+// updateDatabase updates database properties
+func (se *SchemaEditor) updateDatabase(name, description, comment, dbType, dbVersion string) {
+	se.db.Name = name
+	se.db.Description = description
+	se.db.Comment = comment
+	se.db.DatabaseType = models.DatabaseType(dbType)
+	se.db.DatabaseVersion = dbVersion
+	se.db.UpdateDate()
+}
--- a/pkg/ui/database_screens.go
+++ b/pkg/ui/database_screens.go
@@ -0,0 +1,72 @@
+package ui
+
+import (
+	"github.com/gdamore/tcell/v2"
+	"github.com/rivo/tview"
+)
+
+// showEditDatabaseForm displays a dialog to edit database properties
+func (se *SchemaEditor) showEditDatabaseForm() {
+	form := tview.NewForm()
+
+	dbName := se.db.Name
+	dbDescription := se.db.Description
+	dbComment := se.db.Comment
+	dbType := string(se.db.DatabaseType)
+	dbVersion := se.db.DatabaseVersion
+
+	// Database type options
+	dbTypeOptions := []string{"pgsql", "mssql", "sqlite"}
+	selectedTypeIndex := 0
+	for i, opt := range dbTypeOptions {
+		if opt == dbType {
+			selectedTypeIndex = i
+			break
+		}
+	}
+
+	form.AddInputField("Database Name", dbName, 40, nil, func(value string) {
+		dbName = value
+	})
+
+	form.AddInputField("Description", dbDescription, 50, nil, func(value string) {
+		dbDescription = value
+	})
+
+	form.AddInputField("Comment", dbComment, 50, nil, func(value string) {
+		dbComment = value
+	})
+
+	form.AddDropDown("Database Type", dbTypeOptions, selectedTypeIndex, func(option string, index int) {
+		dbType = option
+	})
+
+	form.AddInputField("Database Version", dbVersion, 20, nil, func(value string) {
+		dbVersion = value
+	})
+
+	form.AddButton("Save", func() {
+		if dbName == "" {
+			return
+		}
+		se.updateDatabase(dbName, dbDescription, dbComment, dbType, dbVersion)
+		se.pages.RemovePage("edit-database")
+		se.pages.RemovePage("main")
+		se.pages.AddPage("main", se.createMainMenu(), true, true)
+	})
+
+	form.AddButton("Back", func() {
+		se.pages.RemovePage("edit-database")
+	})
+
+	form.SetBorder(true).SetTitle(" Edit Database ").SetTitleAlign(tview.AlignLeft)
+	form.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
+		if event.Key() == tcell.KeyEscape {
+			se.showExitConfirmation("edit-database", "main")
+			return nil
+		}
+		return event
+	})
+
+	se.pages.AddPage("edit-database", form, true, true)
+}
--- a/pkg/ui/dialogs.go
+++ b/pkg/ui/dialogs.go
@@ -0,0 +1,139 @@
+package ui
+
+import (
+	"fmt"
+
+	"github.com/gdamore/tcell/v2"
+	"github.com/rivo/tview"
+)
+
+// showExitConfirmation shows a confirmation dialog when trying to exit without saving
+func (se *SchemaEditor) showExitConfirmation(pageToRemove, pageToSwitchTo string) {
+	modal := tview.NewModal().
+		SetText("Exit without saving changes?").
+		AddButtons([]string{"Cancel", "No, exit without saving"}).
+		SetDoneFunc(func(buttonIndex int, buttonLabel string) {
+			if buttonLabel == "No, exit without saving" {
+				se.pages.RemovePage(pageToRemove)
+				se.pages.SwitchToPage(pageToSwitchTo)
+			}
+			se.pages.RemovePage("exit-confirm")
+		})
+
+	modal.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
+		if event.Key() == tcell.KeyEscape {
+			se.pages.RemovePage("exit-confirm")
+			return nil
+		}
+		return event
+	})
+
+	se.pages.AddPage("exit-confirm", modal, true, true)
+}
+
+// showExitEditorConfirm shows confirmation dialog when trying to exit the entire editor
+func (se *SchemaEditor) showExitEditorConfirm() {
+	modal := tview.NewModal().
+		SetText("Exit RelSpec Editor? Press ESC again to confirm.").
+		AddButtons([]string{"Cancel", "Exit"}).
+		SetDoneFunc(func(buttonIndex int, buttonLabel string) {
+			if buttonLabel == "Exit" {
+				se.app.Stop()
+			}
+			se.pages.RemovePage("exit-editor-confirm")
+		})
+
+	modal.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
+		if event.Key() == tcell.KeyEscape {
+			se.app.Stop()
+			return nil
+		}
+		return event
+	})
+
+	se.pages.AddPage("exit-editor-confirm", modal, true, true)
+}
+
+// showDeleteSchemaConfirm shows confirmation dialog for schema deletion
+func (se *SchemaEditor) showDeleteSchemaConfirm(schemaIndex int) {
+	modal := tview.NewModal().
+		SetText(fmt.Sprintf("Delete schema '%s'? This will delete all tables in this schema.",
+			se.db.Schemas[schemaIndex].Name)).
+		AddButtons([]string{"Cancel", "Delete"}).
+		SetDoneFunc(func(buttonIndex int, buttonLabel string) {
+			if buttonLabel == "Delete" {
+				se.DeleteSchema(schemaIndex)
+				se.pages.RemovePage("schema-editor")
+				se.pages.RemovePage("schemas")
+				se.showSchemaList()
+			}
+			se.pages.RemovePage("confirm-delete-schema")
+		})
+
+	modal.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
+		if event.Key() == tcell.KeyEscape {
+			se.pages.RemovePage("confirm-delete-schema")
+			return nil
+		}
+		return event
+	})
+
+	se.pages.AddPage("confirm-delete-schema", modal, true, true)
+}
+
+// showDeleteTableConfirm shows confirmation dialog for table deletion
+func (se *SchemaEditor) showDeleteTableConfirm(schemaIndex, tableIndex int) {
+	table := se.db.Schemas[schemaIndex].Tables[tableIndex]
+	modal := tview.NewModal().
+		SetText(fmt.Sprintf("Delete table '%s'? This action cannot be undone.",
+			table.Name)).
+		AddButtons([]string{"Cancel", "Delete"}).
+		SetDoneFunc(func(buttonIndex int, buttonLabel string) {
+			if buttonLabel == "Delete" {
+				se.DeleteTable(schemaIndex, tableIndex)
+				schema := se.db.Schemas[schemaIndex]
+				se.pages.RemovePage("table-editor")
+				se.pages.RemovePage("schema-editor")
+				se.showSchemaEditor(schemaIndex, schema)
+			}
+			se.pages.RemovePage("confirm-delete-table")
+		})
+
+	modal.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
+		if event.Key() == tcell.KeyEscape {
+			se.pages.RemovePage("confirm-delete-table")
+			return nil
+		}
+		return event
+	})
+
+	se.pages.AddPage("confirm-delete-table", modal, true, true)
+}
+
+// showDeleteColumnConfirm shows confirmation dialog for column deletion
+func (se *SchemaEditor) showDeleteColumnConfirm(schemaIndex, tableIndex int, columnName string) {
+	modal := tview.NewModal().
+		SetText(fmt.Sprintf("Delete column '%s'? This action cannot be undone.",
+			columnName)).
+		AddButtons([]string{"Cancel", "Delete"}).
+		SetDoneFunc(func(buttonIndex int, buttonLabel string) {
+			if buttonLabel == "Delete" {
+				se.DeleteColumn(schemaIndex, tableIndex, columnName)
+				se.pages.RemovePage("column-editor")
+				se.pages.RemovePage("confirm-delete-column")
+				se.pages.SwitchToPage("table-editor")
+			} else {
+				se.pages.RemovePage("confirm-delete-column")
+			}
+		})
+
+	modal.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
+		if event.Key() == tcell.KeyEscape {
+			se.pages.RemovePage("confirm-delete-column")
+			return nil
+		}
+		return event
+	})
+
+	se.pages.AddPage("confirm-delete-column", modal, true, true)
+}
--- a/pkg/ui/domain_dataops.go
+++ b/pkg/ui/domain_dataops.go
@@ -0,0 +1,35 @@
+package ui
+
+import (
+	"git.warky.dev/wdevs/relspecgo/pkg/models"
+)
+
+// createDomain creates a new domain
+func (se *SchemaEditor) createDomain(name, description string) {
+	domain := &models.Domain{
+		Name:        name,
+		Description: description,
+		Tables:      make([]*models.DomainTable, 0),
+		Sequence:    uint(len(se.db.Domains)),
+	}
+
+	se.db.Domains = append(se.db.Domains, domain)
+	se.showDomainList()
+}
+
+// updateDomain updates an existing domain
+func (se *SchemaEditor) updateDomain(index int, name, description string) {
+	if index >= 0 && index < len(se.db.Domains) {
+		se.db.Domains[index].Name = name
+		se.db.Domains[index].Description = description
+		se.showDomainList()
+	}
+}
+
+// deleteDomain deletes a domain by index
+func (se *SchemaEditor) deleteDomain(index int) {
+	if index >= 0 && index < len(se.db.Domains) {
+		se.db.Domains = append(se.db.Domains[:index], se.db.Domains[index+1:]...)
+		se.showDomainList()
+	}
+}
--- a/pkg/ui/domain_screens.go
+++ b/pkg/ui/domain_screens.go
@@ -0,0 +1,258 @@
+package ui
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/gdamore/tcell/v2"
+	"github.com/rivo/tview"
+
+	"git.warky.dev/wdevs/relspecgo/pkg/models"
+)
+
+// showDomainList displays the domain management screen
+func (se *SchemaEditor) showDomainList() {
+	flex := tview.NewFlex().SetDirection(tview.FlexRow)
+
+	// Title
+	title := tview.NewTextView().
+		SetText("[::b]Manage Domains").
+		SetDynamicColors(true).
+		SetTextAlign(tview.AlignCenter)
+
+	// Create domains table
+	domainTable := tview.NewTable().SetBorders(true).SetSelectable(true, false).SetFixed(1, 0)
+
+	// Add header row
+	headers := []string{"Name", "Sequence", "Total Tables", "Description"}
+	headerWidths := []int{20, 15, 20}
+	for i, header := range headers {
+		padding := ""
+		if i < len(headerWidths) {
+			padding = strings.Repeat(" ", headerWidths[i]-len(header))
+		}
+		cell := tview.NewTableCell(header + padding).
+			SetTextColor(tcell.ColorYellow).
+			SetSelectable(false).
+			SetAlign(tview.AlignLeft)
+		domainTable.SetCell(0, i, cell)
+	}
+
+	// Add existing domains
+	for row, domain := range se.db.Domains {
+		domain := domain // capture for closure
+
+		// Name - pad to 20 chars
+		nameStr := fmt.Sprintf("%-20s", domain.Name)
+		nameCell := tview.NewTableCell(nameStr).SetSelectable(true)
+		domainTable.SetCell(row+1, 0, nameCell)
+
+		// Sequence - pad to 15 chars
+		seqStr := fmt.Sprintf("%-15s", fmt.Sprintf("%d", domain.Sequence))
+		seqCell := tview.NewTableCell(seqStr).SetSelectable(true)
+		domainTable.SetCell(row+1, 1, seqCell)
+
+		// Total Tables - pad to 20 chars
+		tablesStr := fmt.Sprintf("%-20s", fmt.Sprintf("%d", len(domain.Tables)))
+		tablesCell := tview.NewTableCell(tablesStr).SetSelectable(true)
+		domainTable.SetCell(row+1, 2, tablesCell)
+
+		// Description - no padding, takes remaining space
+		descCell := tview.NewTableCell(domain.Description).SetSelectable(true)
+		domainTable.SetCell(row+1, 3, descCell)
+	}
+
+	domainTable.SetTitle(" Domains ").SetBorder(true).SetTitleAlign(tview.AlignLeft)
+
+	// Action buttons flex
+	btnFlex := tview.NewFlex()
+	btnNewDomain := tview.NewButton("New Domain [n]").SetSelectedFunc(func() {
+		se.showNewDomainDialog()
+	})
+	btnBack := tview.NewButton("Back [b]").SetSelectedFunc(func() {
+		se.pages.SwitchToPage("main")
+		se.pages.RemovePage("domains")
+	})
+
+	// Set up button input captures for Tab/Shift+Tab navigation
+	btnNewDomain.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
+		if event.Key() == tcell.KeyBacktab {
+			se.app.SetFocus(domainTable)
+			return nil
+		}
+		if event.Key() == tcell.KeyTab {
+			se.app.SetFocus(btnBack)
+			return nil
+		}
+		return event
+	})
+
+	btnBack.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
+		if event.Key() == tcell.KeyBacktab {
+			se.app.SetFocus(btnNewDomain)
+			return nil
+		}
+		if event.Key() == tcell.KeyTab {
+			se.app.SetFocus(domainTable)
+			return nil
+		}
+		return event
+	})
+
+	btnFlex.AddItem(btnNewDomain, 0, 1, true).
+		AddItem(btnBack, 0, 1, false)
+
+	domainTable.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
+		if event.Key() == tcell.KeyEscape {
+			se.pages.SwitchToPage("main")
+			se.pages.RemovePage("domains")
+			return nil
+		}
+		if event.Key() == tcell.KeyTab {
+			se.app.SetFocus(btnNewDomain)
+			return nil
+		}
+		if event.Key() == tcell.KeyEnter {
+			row, _ := domainTable.GetSelection()
+			if row > 0 && row <= len(se.db.Domains) { // Skip header row
+				domainIndex := row - 1
+				se.showDomainEditor(domainIndex, se.db.Domains[domainIndex])
+				return nil
+			}
+		}
+		if event.Rune() == 'n' {
+			se.showNewDomainDialog()
+			return nil
+		}
+		if event.Rune() == 'b' {
+			se.pages.SwitchToPage("main")
+			se.pages.RemovePage("domains")
+			return nil
+		}
+		return event
+	})
+
+	flex.AddItem(title, 1, 0, false).
+		AddItem(domainTable, 0, 1, true).
+		AddItem(btnFlex, 1, 0, false)
+
+	se.pages.AddPage("domains", flex, true, true)
+}
+
+// showNewDomainDialog displays a dialog to create a new domain
+func (se *SchemaEditor) showNewDomainDialog() {
+	form := tview.NewForm()
+
+	domainName := ""
+	domainDesc := ""
+
+	form.AddInputField("Name", "", 40, nil, func(value string) {
+		domainName = value
+	})
+
+	form.AddInputField("Description", "", 50, nil, func(value string) {
+		domainDesc = value
+	})
+
+	form.AddButton("Save", func() {
+		if domainName == "" {
+			return
+		}
+		se.createDomain(domainName, domainDesc)
+		se.pages.RemovePage("new-domain")
+		se.pages.RemovePage("domains")
+		se.showDomainList()
+	})
+
+	form.AddButton("Back", func() {
+		se.pages.RemovePage("new-domain")
+		se.pages.RemovePage("domains")
+		se.showDomainList()
+	})
+
+	form.SetBorder(true).SetTitle(" New Domain ").SetTitleAlign(tview.AlignLeft)
+	form.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
+		if event.Key() == tcell.KeyEscape {
+			se.showExitConfirmation("new-domain", "domains")
+			return nil
+		}
+		return event
+	})
+
+	se.pages.AddPage("new-domain", form, true, true)
+}
+
+// showDomainEditor displays a dialog to edit an existing domain
+func (se *SchemaEditor) showDomainEditor(index int, domain *models.Domain) {
+	form := tview.NewForm()
+
+	domainName := domain.Name
+	domainDesc := domain.Description
+
+	form.AddInputField("Name", domainName, 40, nil, func(value string) {
+		domainName = value
+	})
+
+	form.AddInputField("Description", domainDesc, 50, nil, func(value string) {
+		domainDesc = value
+	})
+
+	form.AddButton("Save", func() {
+		if domainName == "" {
+			return
+		}
+		se.updateDomain(index, domainName, domainDesc)
+		se.pages.RemovePage("edit-domain")
+		se.pages.RemovePage("domains")
+		se.showDomainList()
+	})
+
+	form.AddButton("Delete", func() {
+		se.showDeleteDomainConfirm(index)
+	})
+
+	form.AddButton("Back", func() {
+		se.pages.RemovePage("edit-domain")
+		se.pages.RemovePage("domains")
+		se.showDomainList()
+	})
+
+	form.SetBorder(true).SetTitle(" Edit Domain ").SetTitleAlign(tview.AlignLeft)
+	form.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
+		if event.Key() == tcell.KeyEscape {
+			se.showExitConfirmation("edit-domain", "domains")
+			return nil
+		}
+		return event
+	})
+
+	se.pages.AddPage("edit-domain", form, true, true)
+}
+
+// showDeleteDomainConfirm shows a confirmation dialog before deleting a domain
+func (se *SchemaEditor) showDeleteDomainConfirm(index int) {
+	modal := tview.NewModal().
+		SetText(fmt.Sprintf("Delete domain '%s'? This action cannot be undone.", se.db.Domains[index].Name)).
+		AddButtons([]string{"Cancel", "Delete"}).
+		SetDoneFunc(func(buttonIndex int, buttonLabel string) {
+			if buttonLabel == "Delete" {
+				se.deleteDomain(index)
+				se.pages.RemovePage("delete-domain-confirm")
+				se.pages.RemovePage("edit-domain")
+				se.pages.RemovePage("domains")
+				se.showDomainList()
+			} else {
+				se.pages.RemovePage("delete-domain-confirm")
+			}
+		})
+
+	modal.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
+		if event.Key() == tcell.KeyEscape {
+			se.pages.RemovePage("delete-domain-confirm")
+			return nil
+		}
+		return event
+	})
+
+	se.pages.AddAndSwitchToPage("delete-domain-confirm", modal, true)
+}
--- a/pkg/ui/editor.go
+++ b/pkg/ui/editor.go
@@ -0,0 +1,73 @@
+package ui
+
+import (
+	"fmt"
+
+	"github.com/rivo/tview"
+
+	"git.warky.dev/wdevs/relspecgo/pkg/models"
+)
+
+// SchemaEditor represents the interactive schema editor
+type SchemaEditor struct {
+	db         *models.Database
+	app        *tview.Application
+	pages      *tview.Pages
+	loadConfig *LoadConfig
+	saveConfig *SaveConfig
+}
+
+// NewSchemaEditor creates a new schema editor
+func NewSchemaEditor(db *models.Database) *SchemaEditor {
+	return &SchemaEditor{
+		db:         db,
+		app:        tview.NewApplication(),
+		pages:      tview.NewPages(),
+		loadConfig: nil,
+		saveConfig: nil,
+	}
+}
+
+// NewSchemaEditorWithConfigs creates a new schema editor with load/save configurations
+func NewSchemaEditorWithConfigs(db *models.Database, loadConfig *LoadConfig, saveConfig *SaveConfig) *SchemaEditor {
+	return &SchemaEditor{
+		db:         db,
+		app:        tview.NewApplication(),
+		pages:      tview.NewPages(),
+		loadConfig: loadConfig,
+		saveConfig: saveConfig,
+	}
+}
+
+// Run starts the interactive editor
+func (se *SchemaEditor) Run() error {
+	// If no database is loaded, show load screen
+	if se.db == nil {
+		se.showLoadScreen()
+	} else {
+		// Create main menu view
+		mainMenu := se.createMainMenu()
+		se.pages.AddPage("main", mainMenu, true, true)
+	}
+
+	// Run the application
+	if err := se.app.SetRoot(se.pages, true).Run(); err != nil {
+		return fmt.Errorf("application error: %w", err)
+	}
+
+	return nil
+}
+
+// GetDatabase returns the current database
+func (se *SchemaEditor) GetDatabase() *models.Database {
+	return se.db
+}
+
+// Helper function to get sorted column names
+func getColumnNames(table *models.Table) []string {
+	names := make([]string, 0, len(table.Columns))
+	for name := range table.Columns {
+		names = append(names, name)
+	}
+	return names
+}
--- a/pkg/ui/load_save_screens.go
+++ b/pkg/ui/load_save_screens.go
@@ -0,0 +1,526 @@
+package ui
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+
+	"github.com/gdamore/tcell/v2"
+	"github.com/rivo/tview"
+
+	"git.warky.dev/wdevs/relspecgo/pkg/models"
+	"git.warky.dev/wdevs/relspecgo/pkg/readers"
+	rbun "git.warky.dev/wdevs/relspecgo/pkg/readers/bun"
+	rdbml "git.warky.dev/wdevs/relspecgo/pkg/readers/dbml"
+	rdctx "git.warky.dev/wdevs/relspecgo/pkg/readers/dctx"
+	rdrawdb "git.warky.dev/wdevs/relspecgo/pkg/readers/drawdb"
+	rdrizzle "git.warky.dev/wdevs/relspecgo/pkg/readers/drizzle"
+	rgorm "git.warky.dev/wdevs/relspecgo/pkg/readers/gorm"
+	rgraphql "git.warky.dev/wdevs/relspecgo/pkg/readers/graphql"
+	rjson "git.warky.dev/wdevs/relspecgo/pkg/readers/json"
+	rpgsql "git.warky.dev/wdevs/relspecgo/pkg/readers/pgsql"
+	rprisma "git.warky.dev/wdevs/relspecgo/pkg/readers/prisma"
+	rtypeorm "git.warky.dev/wdevs/relspecgo/pkg/readers/typeorm"
+	ryaml "git.warky.dev/wdevs/relspecgo/pkg/readers/yaml"
+	"git.warky.dev/wdevs/relspecgo/pkg/writers"
+	wbun "git.warky.dev/wdevs/relspecgo/pkg/writers/bun"
+	wdbml "git.warky.dev/wdevs/relspecgo/pkg/writers/dbml"
+	wdctx "git.warky.dev/wdevs/relspecgo/pkg/writers/dctx"
+	wdrawdb "git.warky.dev/wdevs/relspecgo/pkg/writers/drawdb"
+	wdrizzle "git.warky.dev/wdevs/relspecgo/pkg/writers/drizzle"
+	wgorm "git.warky.dev/wdevs/relspecgo/pkg/writers/gorm"
+	wgraphql "git.warky.dev/wdevs/relspecgo/pkg/writers/graphql"
+	wjson "git.warky.dev/wdevs/relspecgo/pkg/writers/json"
+	wpgsql "git.warky.dev/wdevs/relspecgo/pkg/writers/pgsql"
+	wprisma "git.warky.dev/wdevs/relspecgo/pkg/writers/prisma"
+	wtypeorm "git.warky.dev/wdevs/relspecgo/pkg/writers/typeorm"
+	wyaml "git.warky.dev/wdevs/relspecgo/pkg/writers/yaml"
+)
+
+// LoadConfig holds the configuration for loading a database
+type LoadConfig struct {
+	SourceType string
+	FilePath   string
+	ConnString string
+}
+
+// SaveConfig holds the configuration for saving a database
+type SaveConfig struct {
+	TargetType string
+	FilePath   string
+	ConnString string
+}
+
+// showLoadScreen displays the database load screen
+func (se *SchemaEditor) showLoadScreen() {
+	flex := tview.NewFlex().SetDirection(tview.FlexRow)
+
+	// Title
+	title := tview.NewTextView().
+		SetText("[::b]Load Database Schema").
+		SetTextAlign(tview.AlignCenter).
+		SetDynamicColors(true)
+
+	// Form
+	form := tview.NewForm()
+	form.SetBorder(true).SetTitle(" Load Configuration ").SetTitleAlign(tview.AlignLeft)
+
+	// Format selection
+	formatOptions := []string{
+		"dbml", "dctx", "drawdb", "graphql", "json", "yaml",
+		"gorm", "bun", "drizzle", "prisma", "typeorm", "pgsql",
+	}
+	selectedFormat := 0
+	currentFormat := formatOptions[selectedFormat]
+
+	// File path input
+	filePath := ""
+	connString := ""
+
+	form.AddDropDown("Format", formatOptions, 0, func(option string, index int) {
+		selectedFormat = index
+		currentFormat = option
+	})
+
+	form.AddInputField("File Path", "", 50, nil, func(value string) {
+		filePath = value
+	})
+
+	form.AddInputField("Connection String", "", 50, nil, func(value string) {
+		connString = value
+	})
+
+	form.AddTextView("Help", getLoadHelpText(), 0, 5, true, false)
+
+	// Buttons
+	form.AddButton("Load [l]", func() {
+		se.loadDatabase(currentFormat, filePath, connString)
+	})
+
+	form.AddButton("Create New [n]", func() {
+		se.createNewDatabase()
+	})
+
+	form.AddButton("Exit [q]", func() {
+		se.app.Stop()
+	})
+
+	// Keyboard shortcuts
+	form.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
+		switch event.Key() {
+		case tcell.KeyEscape:
+			se.app.Stop()
+			return nil
+		}
+		switch event.Rune() {
+		case 'l':
+			se.loadDatabase(currentFormat, filePath, connString)
+			return nil
+		case 'n':
+			se.createNewDatabase()
+			return nil
+		case 'q':
+			se.app.Stop()
+			return nil
+		}
+		return event
+	})
+
+	// Tab navigation
+	form.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
+		if event.Key() == tcell.KeyEscape {
+			se.app.Stop()
+			return nil
+		}
+		if event.Rune() == 'l' || event.Rune() == 'n' || event.Rune() == 'q' {
+			return event
+		}
+		return event
+	})
+
+	flex.AddItem(title, 1, 0, false).
+		AddItem(form, 0, 1, true)
+
+	se.pages.AddAndSwitchToPage("load-database", flex, true)
+}
+
+// showSaveScreen displays the save database screen
+func (se *SchemaEditor) showSaveScreen() {
+	flex := tview.NewFlex().SetDirection(tview.FlexRow)
+
+	// Title
+	title := tview.NewTextView().
+		SetText("[::b]Save Database Schema").
+		SetTextAlign(tview.AlignCenter).
+		SetDynamicColors(true)
+
+	// Form
+	form := tview.NewForm()
+	form.SetBorder(true).SetTitle(" Save Configuration ").SetTitleAlign(tview.AlignLeft)
+
+	// Format selection
+	formatOptions := []string{
+		"dbml", "dctx", "drawdb", "graphql", "json", "yaml",
+		"gorm", "bun", "drizzle", "prisma", "typeorm", "pgsql",
+	}
+	selectedFormat := 0
+	currentFormat := formatOptions[selectedFormat]
+
+	// File path input
+	filePath := ""
+	if se.saveConfig != nil {
+		// Pre-populate with existing save config
+		for i, format := range formatOptions {
+			if format == se.saveConfig.TargetType {
+				selectedFormat = i
+				currentFormat = format
+				break
+			}
+		}
+		filePath = se.saveConfig.FilePath
+	}
+
+	form.AddDropDown("Format", formatOptions, selectedFormat, func(option string, index int) {
+		selectedFormat = index
+		currentFormat = option
+	})
+
+	form.AddInputField("File Path", filePath, 50, nil, func(value string) {
+		filePath = value
+	})
+
+	form.AddTextView("Help", getSaveHelpText(), 0, 5, true, false)
+
+	// Buttons
+	form.AddButton("Save [s]", func() {
+		se.saveDatabase(currentFormat, filePath)
+	})
+
+	form.AddButton("Update Existing Database [u]", func() {
+		// Use saveConfig if available, otherwise use loadConfig
+		if se.saveConfig != nil {
+			se.showUpdateExistingDatabaseConfirm()
+		} else if se.loadConfig != nil {
+			se.showUpdateExistingDatabaseConfirm()
+		} else {
+			se.showErrorDialog("Error", "No database source found. Use Save instead.")
+		}
+	})
+
+	form.AddButton("Back [b]", func() {
+		se.pages.RemovePage("save-database")
+		se.pages.SwitchToPage("main")
+	})
+
+	// Keyboard shortcuts
+	form.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
+		switch event.Key() {
+		case tcell.KeyEscape:
+			se.pages.RemovePage("save-database")
+			se.pages.SwitchToPage("main")
+			return nil
+		}
+		switch event.Rune() {
+		case 's':
+			se.saveDatabase(currentFormat, filePath)
+			return nil
+		case 'u':
+			// Use saveConfig if available, otherwise use loadConfig
+			if se.saveConfig != nil {
+				se.showUpdateExistingDatabaseConfirm()
+			} else if se.loadConfig != nil {
+				se.showUpdateExistingDatabaseConfirm()
+			} else {
+				se.showErrorDialog("Error", "No database source found. Use Save instead.")
+			}
+			return nil
+		case 'b':
+			se.pages.RemovePage("save-database")
+			se.pages.SwitchToPage("main")
+			return nil
+		}
+		return event
+	})
+
+	flex.AddItem(title, 1, 0, false).
+		AddItem(form, 0, 1, true)
+
+	se.pages.AddAndSwitchToPage("save-database", flex, true)
+}
+
+// loadDatabase loads a database from the specified configuration
+func (se *SchemaEditor) loadDatabase(format, filePath, connString string) {
+	// Validate input
+	if format == "pgsql" {
+		if connString == "" {
+			se.showErrorDialog("Error", "Connection string is required for PostgreSQL")
+			return
+		}
+	} else {
+		if filePath == "" {
+			se.showErrorDialog("Error", "File path is required for "+format)
+			return
+		}
+		// Expand home directory
+		if len(filePath) > 0 && filePath[0] == '~' {
+			home, err := os.UserHomeDir()
+			if err == nil {
+				filePath = filepath.Join(home, filePath[1:])
+			}
+		}
+	}
+
+	// Create reader
+	var reader readers.Reader
+	switch format {
+	case "dbml":
+		reader = rdbml.NewReader(&readers.ReaderOptions{FilePath: filePath})
+	case "dctx":
+		reader = rdctx.NewReader(&readers.ReaderOptions{FilePath: filePath})
+	case "drawdb":
+		reader = rdrawdb.NewReader(&readers.ReaderOptions{FilePath: filePath})
+	case "graphql":
+		reader = rgraphql.NewReader(&readers.ReaderOptions{FilePath: filePath})
+	case "json":
+		reader = rjson.NewReader(&readers.ReaderOptions{FilePath: filePath})
+	case "yaml":
+		reader = ryaml.NewReader(&readers.ReaderOptions{FilePath: filePath})
+	case "gorm":
+		reader = rgorm.NewReader(&readers.ReaderOptions{FilePath: filePath})
+	case "bun":
+		reader = rbun.NewReader(&readers.ReaderOptions{FilePath: filePath})
+	case "drizzle":
+		reader = rdrizzle.NewReader(&readers.ReaderOptions{FilePath: filePath})
+	case "prisma":
+		reader = rprisma.NewReader(&readers.ReaderOptions{FilePath: filePath})
+	case "typeorm":
+		reader = rtypeorm.NewReader(&readers.ReaderOptions{FilePath: filePath})
+	case "pgsql":
+		reader = rpgsql.NewReader(&readers.ReaderOptions{ConnectionString: connString})
+	default:
+		se.showErrorDialog("Error", "Unsupported format: "+format)
+		return
+	}
+
+	// Read database
+	db, err := reader.ReadDatabase()
+	if err != nil {
+		se.showErrorDialog("Load Error", fmt.Sprintf("Failed to load database: %v", err))
+		return
+	}
+
+	// Store load config
+	se.loadConfig = &LoadConfig{
+		SourceType: format,
+		FilePath:   filePath,
+		ConnString: connString,
+	}
+
+	// Update database
+	se.db = db
+
+	// Show success and switch to main menu
+	se.showSuccessDialog("Load Complete", fmt.Sprintf("Successfully loaded database '%s'", db.Name), func() {
+		se.pages.RemovePage("load-database")
+		se.pages.RemovePage("main")
+		se.pages.AddPage("main", se.createMainMenu(), true, true)
+	})
+}
+
+// saveDatabase saves the database to the specified configuration
+func (se *SchemaEditor) saveDatabase(format, filePath string) {
+	// Validate input
+	if format == "pgsql" {
+		se.showErrorDialog("Error", "Direct PostgreSQL save is not supported from the UI. Use --to pgsql --to-path output.sql")
+		return
+	}
+
+	if filePath == "" {
+		se.showErrorDialog("Error", "File path is required")
+		return
+	}
+
+	// Expand home directory
+	if len(filePath) > 0 && filePath[0] == '~' {
+		home, err := os.UserHomeDir()
+		if err == nil {
+			filePath = filepath.Join(home, filePath[1:])
+		}
+	}
+
+	// Create writer
+	var writer writers.Writer
+	switch format {
+	case "dbml":
+		writer = wdbml.NewWriter(&writers.WriterOptions{OutputPath: filePath})
+	case "dctx":
+		writer = wdctx.NewWriter(&writers.WriterOptions{OutputPath: filePath})
+	case "drawdb":
+		writer = wdrawdb.NewWriter(&writers.WriterOptions{OutputPath: filePath})
+	case "graphql":
+		writer = wgraphql.NewWriter(&writers.WriterOptions{OutputPath: filePath})
+	case "json":
+		writer = wjson.NewWriter(&writers.WriterOptions{OutputPath: filePath})
+	case "yaml":
+		writer = wyaml.NewWriter(&writers.WriterOptions{OutputPath: filePath})
+	case "gorm":
+		writer = wgorm.NewWriter(&writers.WriterOptions{OutputPath: filePath})
+	case "bun":
+		writer = wbun.NewWriter(&writers.WriterOptions{OutputPath: filePath})
+	case "drizzle":
+		writer = wdrizzle.NewWriter(&writers.WriterOptions{OutputPath: filePath})
+	case "prisma":
+		writer = wprisma.NewWriter(&writers.WriterOptions{OutputPath: filePath})
+	case "typeorm":
+		writer = wtypeorm.NewWriter(&writers.WriterOptions{OutputPath: filePath})
+	case "pgsql":
+		writer = wpgsql.NewWriter(&writers.WriterOptions{OutputPath: filePath})
+	default:
+		se.showErrorDialog("Error", "Unsupported format: "+format)
+		return
+	}
+
+	// Write database
+	err := writer.WriteDatabase(se.db)
+	if err != nil {
+		se.showErrorDialog("Save Error", fmt.Sprintf("Failed to save database: %v", err))
+		return
+	}
+
+	// Store save config
+	se.saveConfig = &SaveConfig{
+		TargetType: format,
+		FilePath:   filePath,
+	}
+
+	// Show success
+	se.showSuccessDialog("Save Complete", fmt.Sprintf("Successfully saved database to %s", filePath), func() {
+		se.pages.RemovePage("save-database")
+		se.pages.SwitchToPage("main")
+	})
+}
+
+// createNewDatabase creates a new empty database
+func (se *SchemaEditor) createNewDatabase() {
+	// Create a new empty database
+	se.db = &models.Database{
+		Name:    "New Database",
+		Schemas: []*models.Schema{},
+	}
+
+	// Clear load config
+	se.loadConfig = nil
+
+	// Show success and switch to main menu
+	se.showSuccessDialog("New Database", "Created new empty database", func() {
+		se.pages.RemovePage("load-database")
+		se.pages.AddPage("main", se.createMainMenu(), true, true)
+	})
+}
+
+// showErrorDialog displays an error dialog
+func (se *SchemaEditor) showErrorDialog(_title, message string) {
+	modal := tview.NewModal().
+		SetText(message).
+		AddButtons([]string{"OK"}).
+		SetDoneFunc(func(buttonIndex int, buttonLabel string) {
+			se.pages.RemovePage("error-dialog")
+		})
+
+	modal.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
+		if event.Key() == tcell.KeyEscape {
+			se.pages.RemovePage("error-dialog")
+			return nil
+		}
+		return event
+	})
+
+	se.pages.AddPage("error-dialog", modal, true, true)
+}
+
+// showSuccessDialog displays a success dialog
+func (se *SchemaEditor) showSuccessDialog(_title, message string, onClose func()) {
+	modal := tview.NewModal().
+		SetText(message).
+		AddButtons([]string{"OK"}).
+		SetDoneFunc(func(buttonIndex int, buttonLabel string) {
+			se.pages.RemovePage("success-dialog")
+			if onClose != nil {
+				onClose()
+			}
+		})
+
+	modal.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
+		if event.Key() == tcell.KeyEscape {
+			se.pages.RemovePage("success-dialog")
+			if onClose != nil {
+				onClose()
+			}
+			return nil
+		}
+		return event
+	})
+
+	se.pages.AddPage("success-dialog", modal, true, true)
+}
+
+// getLoadHelpText returns the help text for the load screen
+func getLoadHelpText() string {
+	return `File-based formats: dbml, dctx, drawdb, graphql, json, yaml, gorm, bun, drizzle, prisma, typeorm
+Database formats: pgsql (requires connection string)
+
+Examples:
+  - File path: ~/schemas/mydb.dbml or /path/to/schema.json
+  - Connection: postgres://user:pass@localhost/dbname`
+}
+
+// showUpdateExistingDatabaseConfirm displays a confirmation dialog before updating existing database
+func (se *SchemaEditor) showUpdateExistingDatabaseConfirm() {
+	// Use saveConfig if available, otherwise use loadConfig
+	var targetType, targetPath string
+	if se.saveConfig != nil {
+		targetType = se.saveConfig.TargetType
+		targetPath = se.saveConfig.FilePath
+	} else if se.loadConfig != nil {
+		targetType = se.loadConfig.SourceType
+		targetPath = se.loadConfig.FilePath
+	} else {
+		return
+	}
+
+	confirmText := fmt.Sprintf("Update existing database?\n\nFormat: %s\nPath: %s\n\nThis will overwrite the source.",
+		targetType, targetPath)
+
+	modal := tview.NewModal().
+		SetText(confirmText).
+		AddButtons([]string{"Cancel", "Update"}).
+		SetDoneFunc(func(buttonIndex int, buttonLabel string) {
+			if buttonLabel == "Update" {
+				se.pages.RemovePage("update-confirm")
+				se.pages.RemovePage("save-database")
+				se.saveDatabase(targetType, targetPath)
+				se.pages.SwitchToPage("main")
+			} else {
+				se.pages.RemovePage("update-confirm")
+			}
+		})
+
+	modal.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
+		if event.Key() == tcell.KeyEscape {
+			se.pages.RemovePage("update-confirm")
+			return nil
+		}
+		return event
+	})
+
+	se.pages.AddAndSwitchToPage("update-confirm", modal, true)
+}
+
+// getSaveHelpText returns the help text for the save screen
+func getSaveHelpText() string {
+	return `File-based formats: dbml, dctx, drawdb, graphql, json, yaml, gorm, bun, drizzle, prisma, typeorm, pgsql (SQL export)
+
+Examples:
+  - File: ~/schemas/mydb.dbml
+  - Directory (for code formats): ./models/`
+}
--- a/pkg/ui/main_menu.go
+++ b/pkg/ui/main_menu.go
@@ -0,0 +1,62 @@
+package ui
+
+import (
+	"fmt"
+
+	"github.com/gdamore/tcell/v2"
+	"github.com/rivo/tview"
+)
+
+// createMainMenu creates the main menu screen
+func (se *SchemaEditor) createMainMenu() tview.Primitive {
+	flex := tview.NewFlex().SetDirection(tview.FlexRow)
+
+	// Title with database name
+	dbName := se.db.Name
+	if dbName == "" {
+		dbName = "Untitled"
+	}
+	updateAtStr := ""
+	if se.db.UpdatedAt != "" {
+		updateAtStr = fmt.Sprintf("Updated @ %s", se.db.UpdatedAt)
+	}
+	titleText := fmt.Sprintf("[::b]RelSpec Schema Editor\n[::d]Database: %s %s\n[::d]Press arrow keys to navigate, Enter to select", dbName, updateAtStr)
+	title := tview.NewTextView().
+		SetText(titleText).
+		SetDynamicColors(true)
+
+	// Menu options
+	menu := tview.NewList().
+		AddItem("Edit Database", "Edit database name, description, and properties", 'e', func() {
+			se.showEditDatabaseForm()
+		}).
+		AddItem("Manage Schemas", "View, create, edit, and delete schemas", 's', func() {
+			se.showSchemaList()
+		}).
+		AddItem("Manage Tables", "View and manage tables in schemas", 't', func() {
+			se.showTableList()
+		}).
+		AddItem("Manage Domains", "View, create, edit, and delete domains", 'd', func() {
+			se.showDomainList()
+		}).
+		AddItem("Save Database", "Save database to file or database", 'w', func() {
+			se.showSaveScreen()
+		}).
+		AddItem("Exit Editor", "Exit the editor", 'q', func() {
+			se.app.Stop()
+		})
+
+	menu.SetBorder(true).SetTitle(" Menu ").SetTitleAlign(tview.AlignLeft)
+	menu.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
+		if event.Key() == tcell.KeyEscape {
+			se.showExitEditorConfirm()
+			return nil
+		}
+		return event
+	})
+
+	flex.AddItem(title, 5, 0, false).
+		AddItem(menu, 0, 1, true)
+
+	return flex
+}
--- a/pkg/ui/schema_dataops.go
+++ b/pkg/ui/schema_dataops.go
@@ -0,0 +1,55 @@
+package ui
+
+import "git.warky.dev/wdevs/relspecgo/pkg/models"
+
+// Schema data operations - business logic for schema management
+
+// CreateSchema creates a new schema and adds it to the database
+func (se *SchemaEditor) CreateSchema(name, description string) *models.Schema {
+	newSchema := &models.Schema{
+		Name:        name,
+		Description: description,
+		Tables:      make([]*models.Table, 0),
+		Sequences:   make([]*models.Sequence, 0),
+		Enums:       make([]*models.Enum, 0),
+	}
+	se.db.UpdateDate()
+	se.db.Schemas = append(se.db.Schemas, newSchema)
+	return newSchema
+}
+
+// UpdateSchema updates an existing schema's properties
+func (se *SchemaEditor) UpdateSchema(schemaIndex int, name, owner, description string) {
+	if schemaIndex < 0 || schemaIndex >= len(se.db.Schemas) {
+		return
+	}
+	se.db.UpdateDate()
+	schema := se.db.Schemas[schemaIndex]
+	schema.Name = name
+	schema.Owner = owner
+	schema.Description = description
+	schema.UpdateDate()
+}
+
+// DeleteSchema removes a schema from the database
+func (se *SchemaEditor) DeleteSchema(schemaIndex int) bool {
+	if schemaIndex < 0 || schemaIndex >= len(se.db.Schemas) {
+		return false
+	}
+	se.db.UpdateDate()
+	se.db.Schemas = append(se.db.Schemas[:schemaIndex], se.db.Schemas[schemaIndex+1:]...)
+	return true
+}
+
+// GetSchema returns a schema by index
+func (se *SchemaEditor) GetSchema(schemaIndex int) *models.Schema {
+	if schemaIndex < 0 || schemaIndex >= len(se.db.Schemas) {
+		return nil
+	}
+	return se.db.Schemas[schemaIndex]
+}
+
+// GetAllSchemas returns all schemas
+func (se *SchemaEditor) GetAllSchemas() []*models.Schema {
+	return se.db.Schemas
+}
--- a/pkg/ui/schema_screens.go
+++ b/pkg/ui/schema_screens.go
@@ -0,0 +1,351 @@
+package ui
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/gdamore/tcell/v2"
+	"github.com/rivo/tview"
+
+	"git.warky.dev/wdevs/relspecgo/pkg/models"
+)
+
+// showSchemaList displays the schema management screen
+func (se *SchemaEditor) showSchemaList() {
+	flex := tview.NewFlex().SetDirection(tview.FlexRow)
+
+	// Title
+	title := tview.NewTextView().
+		SetText("[::b]Manage Schemas").
+		SetDynamicColors(true).
+		SetTextAlign(tview.AlignCenter)
+
+	// Create schemas table
+	schemaTable := tview.NewTable().SetBorders(true).SetSelectable(true, false).SetFixed(1, 0)
+
+	// Add header row with padding for full width
+	headers := []string{"Name", "Sequence", "Total Tables", "Total Sequences", "Total Views", "Description"}
+	headerWidths := []int{20, 15, 20, 20, 15} // Last column takes remaining space
+	for i, header := range headers {
+		padding := ""
+		if i < len(headerWidths) {
+			padding = strings.Repeat(" ", headerWidths[i]-len(header))
+		}
+		cell := tview.NewTableCell(header + padding).
+			SetTextColor(tcell.ColorYellow).
+			SetSelectable(false).
+			SetAlign(tview.AlignLeft)
+		schemaTable.SetCell(0, i, cell)
+	}
+
+	// Add existing schemas
+	for row, schema := range se.db.Schemas {
+		schema := schema // capture for closure
+
+		// Name - pad to 20 chars
+		nameStr := fmt.Sprintf("%-20s", schema.Name)
+		nameCell := tview.NewTableCell(nameStr).SetSelectable(true)
+		schemaTable.SetCell(row+1, 0, nameCell)
+
+		// Sequence - pad to 15 chars
+		seqStr := fmt.Sprintf("%-15s", fmt.Sprintf("%d", schema.Sequence))
+		seqCell := tview.NewTableCell(seqStr).SetSelectable(true)
+		schemaTable.SetCell(row+1, 1, seqCell)
+
+		// Total Tables - pad to 20 chars
+		tablesStr := fmt.Sprintf("%-20s", fmt.Sprintf("%d", len(schema.Tables)))
+		tablesCell := tview.NewTableCell(tablesStr).SetSelectable(true)
+		schemaTable.SetCell(row+1, 2, tablesCell)
+
+		// Total Sequences - pad to 20 chars
+		sequencesStr := fmt.Sprintf("%-20s", fmt.Sprintf("%d", len(schema.Sequences)))
+		sequencesCell := tview.NewTableCell(sequencesStr).SetSelectable(true)
+		schemaTable.SetCell(row+1, 3, sequencesCell)
+
+		// Total Views - pad to 15 chars
+		viewsStr := fmt.Sprintf("%-15s", fmt.Sprintf("%d", len(schema.Views)))
+		viewsCell := tview.NewTableCell(viewsStr).SetSelectable(true)
+		schemaTable.SetCell(row+1, 4, viewsCell)
+
+		// Description - no padding, takes remaining space
+		descCell := tview.NewTableCell(schema.Description).SetSelectable(true)
+		schemaTable.SetCell(row+1, 5, descCell)
+	}
+
+	schemaTable.SetTitle(" Schemas ").SetBorder(true).SetTitleAlign(tview.AlignLeft)
+
+	// Action buttons flex (define before input capture)
+	btnFlex := tview.NewFlex()
+	btnNewSchema := tview.NewButton("New Schema [n]").SetSelectedFunc(func() {
+		se.showNewSchemaDialog()
+	})
+	btnBack := tview.NewButton("Back [b]").SetSelectedFunc(func() {
+		se.pages.SwitchToPage("main")
+		se.pages.RemovePage("schemas")
+	})
+
+	// Set up button input captures for Tab/Shift+Tab navigation
+	btnNewSchema.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
+		if event.Key() == tcell.KeyBacktab {
+			se.app.SetFocus(schemaTable)
+			return nil
+		}
+		if event.Key() == tcell.KeyTab {
+			se.app.SetFocus(btnBack)
+			return nil
+		}
+		return event
+	})
+
+	btnBack.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
+		if event.Key() == tcell.KeyBacktab {
+			se.app.SetFocus(btnNewSchema)
+			return nil
+		}
+		if event.Key() == tcell.KeyTab {
+			se.app.SetFocus(schemaTable)
+			return nil
+		}
+		return event
+	})
+
+	btnFlex.AddItem(btnNewSchema, 0, 1, true).
+		AddItem(btnBack, 0, 1, false)
+
+	schemaTable.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
+		if event.Key() == tcell.KeyEscape {
+			se.pages.SwitchToPage("main")
+			se.pages.RemovePage("schemas")
+			return nil
+		}
+		if event.Key() == tcell.KeyTab {
+			se.app.SetFocus(btnNewSchema)
+			return nil
+		}
+		if event.Key() == tcell.KeyEnter {
+			row, _ := schemaTable.GetSelection()
+			if row > 0 && row <= len(se.db.Schemas) { // Skip header row
+				schemaIndex := row - 1
+				se.showSchemaEditor(schemaIndex, se.db.Schemas[schemaIndex])
+				return nil
+			}
+		}
+		if event.Rune() == 'n' {
+			se.showNewSchemaDialog()
+			return nil
+		}
+		if event.Rune() == 'b' {
+			se.pages.SwitchToPage("main")
+			se.pages.RemovePage("schemas")
+			return nil
+		}
+		return event
+	})
+
+	flex.AddItem(title, 1, 0, false).
+		AddItem(schemaTable, 0, 1, true).
+		AddItem(btnFlex, 1, 0, false)
+
+	se.pages.AddPage("schemas", flex, true, true)
+}
+
+// showSchemaEditor shows the editor for a specific schema
+func (se *SchemaEditor) showSchemaEditor(index int, schema *models.Schema) {
+	flex := tview.NewFlex().SetDirection(tview.FlexRow)
+
+	// Title
+	title := tview.NewTextView().
+		SetText(fmt.Sprintf("[::b]Schema: %s", schema.Name)).
+		SetDynamicColors(true).
+		SetTextAlign(tview.AlignCenter)
+
+	// Schema info display
+	info := tview.NewTextView().SetDynamicColors(true)
+	info.SetText(fmt.Sprintf("Tables: %d | Description: %s",
+		len(schema.Tables), schema.Description))
+
+	// Table list
+	tableList := tview.NewList().ShowSecondaryText(true)
+
+	for i, table := range schema.Tables {
+		tableIndex := i
+		table := table
+		colCount := len(table.Columns)
+		tableList.AddItem(table.Name, fmt.Sprintf("%d columns", colCount), rune('0'+i), func() {
+			se.showTableEditor(index, tableIndex, table)
+		})
+	}
+
+	tableList.AddItem("[New Table]", "Add a new table to this schema", 'n', func() {
+		se.showNewTableDialog(index)
+	})
+
+	tableList.AddItem("[Edit Schema Info]", "Edit schema properties", 'e', func() {
+		se.showEditSchemaDialog(index)
+	})
+
+	tableList.AddItem("[Delete Schema]", "Delete this schema", 'd', func() {
+		se.showDeleteSchemaConfirm(index)
+	})
+
+	tableList.SetBorder(true).SetTitle(" Tables ").SetTitleAlign(tview.AlignLeft)
+
+	// Action buttons (define before input capture)
+	btnFlex := tview.NewFlex()
+	btnNewTable := tview.NewButton("New Table [n]").SetSelectedFunc(func() {
+		se.showNewTableDialog(index)
+	})
+	btnBack := tview.NewButton("Back to Schemas [b]").SetSelectedFunc(func() {
+		se.pages.RemovePage("schema-editor")
+		se.pages.SwitchToPage("schemas")
+	})
+
+	// Set up button input captures for Tab/Shift+Tab navigation
+	btnNewTable.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
+		if event.Key() == tcell.KeyBacktab {
+			se.app.SetFocus(tableList)
+			return nil
+		}
+		if event.Key() == tcell.KeyTab {
+			se.app.SetFocus(btnBack)
+			return nil
+		}
+		return event
+	})
+
+	btnBack.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
+		if event.Key() == tcell.KeyBacktab {
+			se.app.SetFocus(btnNewTable)
+			return nil
+		}
+		if event.Key() == tcell.KeyTab {
+			se.app.SetFocus(tableList)
+			return nil
+		}
+		return event
+	})
+
+	tableList.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
+		if event.Key() == tcell.KeyEscape {
+			se.pages.RemovePage("schema-editor")
+			se.pages.SwitchToPage("schemas")
+			return nil
+		}
+		if event.Key() == tcell.KeyTab {
+			se.app.SetFocus(btnNewTable)
+			return nil
+		}
+		if event.Rune() == 'b' {
+			se.pages.RemovePage("schema-editor")
+			se.pages.SwitchToPage("schemas")
+		}
+		return event
+	})
+
+	btnFlex.AddItem(btnNewTable, 0, 1, true).
+		AddItem(btnBack, 0, 1, false)
+
+	flex.AddItem(title, 1, 0, false).
+		AddItem(info, 2, 0, false).
+		AddItem(tableList, 0, 1, true).
+		AddItem(btnFlex, 1, 0, false)
+
+	se.pages.AddPage("schema-editor", flex, true, true)
+}
+
+// showNewSchemaDialog shows dialog to create a new schema
+func (se *SchemaEditor) showNewSchemaDialog() {
+	form := tview.NewForm()
+
+	schemaName := ""
+	description := ""
+
+	form.AddInputField("Schema Name", "", 40, nil, func(value string) {
+		schemaName = value
+	})
+
+	form.AddInputField("Description", "", 40, nil, func(value string) {
+		description = value
+	})
+
+	form.AddButton("Save", func() {
+		if schemaName == "" {
+			return
+		}
+
+		se.CreateSchema(schemaName, description)
+
+		se.pages.RemovePage("new-schema")
+		se.pages.RemovePage("schemas")
+		se.showSchemaList()
+	})
+
+	form.AddButton("Back", func() {
+		se.pages.RemovePage("new-schema")
+		se.pages.RemovePage("schemas")
+		se.showSchemaList()
+	})
+
+	form.SetBorder(true).SetTitle(" New Schema ").SetTitleAlign(tview.AlignLeft)
+	form.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
+		if event.Key() == tcell.KeyEscape {
+			se.showExitConfirmation("new-schema", "schemas")
+			return nil
+		}
+		return event
+	})
+
+	se.pages.AddPage("new-schema", form, true, true)
+}
+
+// showEditSchemaDialog shows dialog to edit schema properties
+func (se *SchemaEditor) showEditSchemaDialog(schemaIndex int) {
+	schema := se.db.Schemas[schemaIndex]
+	form := tview.NewForm()
+
+	// Local variables to collect changes
+	newName := schema.Name
+	newOwner := schema.Owner
+	newDescription := schema.Description
+
+	form.AddInputField("Schema Name", schema.Name, 40, nil, func(value string) {
+		newName = value
+	})
+
+	form.AddInputField("Owner", schema.Owner, 40, nil, func(value string) {
+		newOwner = value
+	})
+
+	form.AddTextArea("Description", schema.Description, 40, 5, 0, func(value string) {
+		newDescription = value
+	})
+
+	form.AddButton("Save", func() {
+		// Apply changes using dataops
+		se.UpdateSchema(schemaIndex, newName, newOwner, newDescription)
+
+		schema := se.db.Schemas[schemaIndex]
+		se.pages.RemovePage("edit-schema")
+		se.pages.RemovePage("schema-editor")
+		se.showSchemaEditor(schemaIndex, schema)
+	})
+
+	form.AddButton("Back", func() {
+		// Discard changes - don't apply them
+		schema := se.db.Schemas[schemaIndex]
+		se.pages.RemovePage("edit-schema")
+		se.pages.RemovePage("schema-editor")
+		se.showSchemaEditor(schemaIndex, schema)
+	})
+
+	form.SetBorder(true).SetTitle(" Edit Schema ").SetTitleAlign(tview.AlignLeft)
+	form.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
+		if event.Key() == tcell.KeyEscape {
+			se.showExitConfirmation("edit-schema", "schema-editor")
+			return nil
+		}
+		return event
+	})
+
+	se.pages.AddPage("edit-schema", form, true, true)
+}
--- a/pkg/ui/table_dataops.go
+++ b/pkg/ui/table_dataops.go
@@ -0,0 +1,88 @@
+package ui
+
+import "git.warky.dev/wdevs/relspecgo/pkg/models"
+
+// Table data operations - business logic for table management
+
+// CreateTable creates a new table and adds it to a schema
+func (se *SchemaEditor) CreateTable(schemaIndex int, name, description string) *models.Table {
+	if schemaIndex < 0 || schemaIndex >= len(se.db.Schemas) {
+		return nil
+	}
+
+	schema := se.db.Schemas[schemaIndex]
+	newTable := &models.Table{
+		Name:        name,
+		Schema:      schema.Name,
+		Description: description,
+		Columns:     make(map[string]*models.Column),
+		Constraints: make(map[string]*models.Constraint),
+		Indexes:     make(map[string]*models.Index),
+	}
+	schema.UpdateDate()
+	schema.Tables = append(schema.Tables, newTable)
+	return newTable
+}
+
+// UpdateTable updates an existing table's properties
+func (se *SchemaEditor) UpdateTable(schemaIndex, tableIndex int, name, description string) {
+	if schemaIndex < 0 || schemaIndex >= len(se.db.Schemas) {
+		return
+	}
+
+	schema := se.db.Schemas[schemaIndex]
+	if tableIndex < 0 || tableIndex >= len(schema.Tables) {
+		return
+	}
+	schema.UpdateDate()
+	table := schema.Tables[tableIndex]
+	table.Name = name
+	table.Description = description
+	table.UpdateDate()
+}
+
+// DeleteTable removes a table from a schema
+func (se *SchemaEditor) DeleteTable(schemaIndex, tableIndex int) bool {
+	if schemaIndex < 0 || schemaIndex >= len(se.db.Schemas) {
+		return false
+	}
+
+	schema := se.db.Schemas[schemaIndex]
+	if tableIndex < 0 || tableIndex >= len(schema.Tables) {
+		return false
+	}
+	schema.UpdateDate()
+	schema.Tables = append(schema.Tables[:tableIndex], schema.Tables[tableIndex+1:]...)
+	return true
+}
+
+// GetTable returns a table by schema and table index
+func (se *SchemaEditor) GetTable(schemaIndex, tableIndex int) *models.Table {
+	if schemaIndex < 0 || schemaIndex >= len(se.db.Schemas) {
+		return nil
+	}
+
+	schema := se.db.Schemas[schemaIndex]
+	if tableIndex < 0 || tableIndex >= len(schema.Tables) {
+		return nil
+	}
+
+	return schema.Tables[tableIndex]
+}
+
+// GetAllTables returns all tables across all schemas
+func (se *SchemaEditor) GetAllTables() []*models.Table {
+	var tables []*models.Table
+	for _, schema := range se.db.Schemas {
+		tables = append(tables, schema.Tables...)
+	}
+	return tables
+}
+
+// GetTablesInSchema returns all tables in a specific schema
+func (se *SchemaEditor) GetTablesInSchema(schemaIndex int) []*models.Table {
+	if schemaIndex < 0 || schemaIndex >= len(se.db.Schemas) {
+		return nil
+	}
+	return se.db.Schemas[schemaIndex].Tables
+}
--- a/pkg/ui/table_screens.go
+++ b/pkg/ui/table_screens.go
@@ -0,0 +1,530 @@
+package ui
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/gdamore/tcell/v2"
+	"github.com/rivo/tview"
+
+	"git.warky.dev/wdevs/relspecgo/pkg/models"
+)
+
+// showTableList displays all tables across all schemas
+func (se *SchemaEditor) showTableList() {
+	flex := tview.NewFlex().SetDirection(tview.FlexRow)
+
+	// Title
+	title := tview.NewTextView().
+		SetText("[::b]All Tables").
+		SetDynamicColors(true).
+		SetTextAlign(tview.AlignCenter)
+
+	// Create tables table
+	tableTable := tview.NewTable().SetBorders(true).SetSelectable(true, false).SetFixed(1, 0)
+
+	// Add header row with padding for full width
+	headers := []string{"Name", "Schema", "Sequence", "Total Columns", "Total Relations", "Total Indexes", "Description", "Comment"}
+	headerWidths := []int{18, 15, 12, 14, 15, 14, 0, 12} // Description gets remainder
+	for i, header := range headers {
+		padding := ""
+		if i < len(headerWidths) && headerWidths[i] > 0 {
+			padding = strings.Repeat(" ", headerWidths[i]-len(header))
+		}
+		cell := tview.NewTableCell(header + padding).
+			SetTextColor(tcell.ColorYellow).
+			SetSelectable(false).
+			SetAlign(tview.AlignLeft)
+		tableTable.SetCell(0, i, cell)
+	}
+
+	var tables []*models.Table
+	var tableLocations []struct{ schemaIdx, tableIdx int }
+
+	for si, schema := range se.db.Schemas {
+		for ti, table := range schema.Tables {
+			tables = append(tables, table)
+			tableLocations = append(tableLocations, struct{ schemaIdx, tableIdx int }{si, ti})
+		}
+	}
+
+	for row, table := range tables {
+		tableIdx := tableLocations[row]
+		schema := se.db.Schemas[tableIdx.schemaIdx]
+
+		// Name - pad to 18 chars
+		nameStr := fmt.Sprintf("%-18s", table.Name)
+		nameCell := tview.NewTableCell(nameStr).SetSelectable(true)
+		tableTable.SetCell(row+1, 0, nameCell)
+
+		// Schema - pad to 15 chars
+		schemaStr := fmt.Sprintf("%-15s", schema.Name)
+		schemaCell := tview.NewTableCell(schemaStr).SetSelectable(true)
+		tableTable.SetCell(row+1, 1, schemaCell)
+
+		// Sequence - pad to 12 chars
+		seqStr := fmt.Sprintf("%-12s", fmt.Sprintf("%d", table.Sequence))
+		seqCell := tview.NewTableCell(seqStr).SetSelectable(true)
+		tableTable.SetCell(row+1, 2, seqCell)
+
+		// Total Columns - pad to 14 chars
+		colsStr := fmt.Sprintf("%-14s", fmt.Sprintf("%d", len(table.Columns)))
+		colsCell := tview.NewTableCell(colsStr).SetSelectable(true)
+		tableTable.SetCell(row+1, 3, colsCell)
+
+		// Total Relations - pad to 15 chars
+		relsStr := fmt.Sprintf("%-15s", fmt.Sprintf("%d", len(table.Relationships)))
+		relsCell := tview.NewTableCell(relsStr).SetSelectable(true)
+		tableTable.SetCell(row+1, 4, relsCell)
+
+		// Total Indexes - pad to 14 chars
+		idxStr := fmt.Sprintf("%-14s", fmt.Sprintf("%d", len(table.Indexes)))
+		idxCell := tview.NewTableCell(idxStr).SetSelectable(true)
+		tableTable.SetCell(row+1, 5, idxCell)
+
+		// Description - no padding, takes remaining space
+		descCell := tview.NewTableCell(table.Description).SetSelectable(true)
+		tableTable.SetCell(row+1, 6, descCell)
+
+		// Comment - pad to 12 chars
+		commentStr := fmt.Sprintf("%-12s", table.Comment)
+		commentCell := tview.NewTableCell(commentStr).SetSelectable(true)
+		tableTable.SetCell(row+1, 7, commentCell)
+	}
+
+	tableTable.SetTitle(" All Tables ").SetBorder(true).SetTitleAlign(tview.AlignLeft)
+
+	// Action buttons (define before input capture)
+	btnFlex := tview.NewFlex()
+	btnNewTable := tview.NewButton("New Table [n]").SetSelectedFunc(func() {
+		se.showNewTableDialogFromList()
+	})
+	btnBack := tview.NewButton("Back [b]").SetSelectedFunc(func() {
+		se.pages.SwitchToPage("main")
+		se.pages.RemovePage("tables")
+	})
+
+	// Set up button input captures for Tab/Shift+Tab navigation
+	btnNewTable.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
+		if event.Key() == tcell.KeyBacktab {
+			se.app.SetFocus(tableTable)
+			return nil
+		}
+		if event.Key() == tcell.KeyTab {
+			se.app.SetFocus(btnBack)
+			return nil
+		}
+		return event
+	})
+
+	btnBack.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
+		if event.Key() == tcell.KeyBacktab {
+			se.app.SetFocus(btnNewTable)
+			return nil
+		}
+		if event.Key() == tcell.KeyTab {
+			se.app.SetFocus(tableTable)
+			return nil
+		}
+		return event
+	})
+
+	btnFlex.AddItem(btnNewTable, 0, 1, true).
+		AddItem(btnBack, 0, 1, false)
+
+	tableTable.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
+		if event.Key() == tcell.KeyEscape {
+			se.pages.SwitchToPage("main")
+			se.pages.RemovePage("tables")
+			return nil
+		}
+		if event.Key() == tcell.KeyTab {
+			se.app.SetFocus(btnNewTable)
+			return nil
+		}
+		if event.Key() == tcell.KeyEnter {
+			row, _ := tableTable.GetSelection()
+			if row > 0 && row <= len(tables) { // Skip header row
+				tableIdx := tableLocations[row-1]
+				se.showTableEditor(tableIdx.schemaIdx, tableIdx.tableIdx, tables[row-1])
+				return nil
+			}
+		}
+		if event.Rune() == 'n' {
+			se.showNewTableDialogFromList()
+			return nil
+		}
+		if event.Rune() == 'b' {
+			se.pages.SwitchToPage("main")
+			se.pages.RemovePage("tables")
+			return nil
+		}
+		return event
+	})
+
+	flex.AddItem(title, 1, 0, false).
+		AddItem(tableTable, 0, 1, true).
+		AddItem(btnFlex, 1, 0, false)
+
+	se.pages.AddPage("tables", flex, true, true)
+}
+
+// showTableEditor shows editor for a specific table
+func (se *SchemaEditor) showTableEditor(schemaIndex, tableIndex int, table *models.Table) {
+	flex := tview.NewFlex().SetDirection(tview.FlexRow)
+
+	// Title
+	title := tview.NewTextView().
+		SetText(fmt.Sprintf("[::b]Table: %s", table.Name)).
+		SetDynamicColors(true).
+		SetTextAlign(tview.AlignCenter)
+
+	// Table info
+	info := tview.NewTextView().SetDynamicColors(true)
+	info.SetText(fmt.Sprintf("Schema: %s | Columns: %d | Description: %s",
+		table.Schema, len(table.Columns), table.Description))
+
+	// Create columns table
+	colTable := tview.NewTable().SetBorders(true).SetSelectable(true, false).SetFixed(1, 0)
+
+	// Add header row with padding for full width
+	headers := []string{"Name", "Type", "Default", "KeyType", "Description"}
+	headerWidths := []int{20, 18, 15, 15} // Last column takes remaining space
+	for i, header := range headers {
+		padding := ""
+		if i < len(headerWidths) {
+			padding = strings.Repeat(" ", headerWidths[i]-len(header))
+		}
+		cell := tview.NewTableCell(header + padding).
+			SetTextColor(tcell.ColorYellow).
+			SetSelectable(false).
+			SetAlign(tview.AlignLeft)
+		colTable.SetCell(0, i, cell)
+	}
+
+	// Get sorted column names
+	columnNames := getColumnNames(table)
+	for row, colName := range columnNames {
+		column := table.Columns[colName]
+
+		// Name - pad to 20 chars
+		nameStr := fmt.Sprintf("%-20s", colName)
+		nameCell := tview.NewTableCell(nameStr).SetSelectable(true)
+		colTable.SetCell(row+1, 0, nameCell)
+
+		// Type - pad to 18 chars
+		typeStr := fmt.Sprintf("%-18s", column.Type)
+		typeCell := tview.NewTableCell(typeStr).SetSelectable(true)
+		colTable.SetCell(row+1, 1, typeCell)
+
+		// Default - pad to 15 chars
+		defaultStr := ""
+		if column.Default != nil {
+			defaultStr = fmt.Sprintf("%v", column.Default)
+		}
+		defaultStr = fmt.Sprintf("%-15s", defaultStr)
+		defaultCell := tview.NewTableCell(defaultStr).SetSelectable(true)
+		colTable.SetCell(row+1, 2, defaultCell)
+
+		// KeyType - pad to 15 chars
+		keyTypeStr := ""
+		if column.IsPrimaryKey {
+			keyTypeStr = "PRIMARY"
+		} else if column.NotNull {
+			keyTypeStr = "NOT NULL"
+		}
+		keyTypeStr = fmt.Sprintf("%-15s", keyTypeStr)
+		keyTypeCell := tview.NewTableCell(keyTypeStr).SetSelectable(true)
+		colTable.SetCell(row+1, 3, keyTypeCell)
+
+		// Description
+		descCell := tview.NewTableCell(column.Description).SetSelectable(true)
+		colTable.SetCell(row+1, 4, descCell)
+	}
+
+	colTable.SetTitle(" Columns ").SetBorder(true).SetTitleAlign(tview.AlignLeft)
+
+	// Action buttons flex (define before input capture)
+	btnFlex := tview.NewFlex()
+	btnNewCol := tview.NewButton("Add Column [n]").SetSelectedFunc(func() {
+		se.showNewColumnDialog(schemaIndex, tableIndex)
+	})
+	btnEditTable := tview.NewButton("Edit Table [e]").SetSelectedFunc(func() {
+		se.showEditTableDialog(schemaIndex, tableIndex)
+	})
+	btnEditColumn := tview.NewButton("Edit Column [c]").SetSelectedFunc(func() {
+		row, _ := colTable.GetSelection()
+		if row > 0 && row <= len(columnNames) { // Skip header row
+			colName := columnNames[row-1]
+			column := table.Columns[colName]
+			se.showColumnEditor(schemaIndex, tableIndex, row-1, column)
+		}
+	})
+	btnDelTable := tview.NewButton("Delete Table [d]").SetSelectedFunc(func() {
+		se.showDeleteTableConfirm(schemaIndex, tableIndex)
+	})
+	btnBack := tview.NewButton("Back to Schema [b]").SetSelectedFunc(func() {
+		se.pages.RemovePage("table-editor")
+		se.pages.SwitchToPage("schema-editor")
+	})
+
+	// Set up button input captures for Tab/Shift+Tab navigation
+	btnNewCol.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
+		if event.Key() == tcell.KeyBacktab {
+			se.app.SetFocus(colTable)
+			return nil
+		}
+		if event.Key() == tcell.KeyTab {
+			se.app.SetFocus(btnEditColumn)
+			return nil
+		}
+		return event
+	})
+
+	btnEditColumn.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
+		if event.Key() == tcell.KeyBacktab {
+			se.app.SetFocus(btnNewCol)
+			return nil
+		}
+		if event.Key() == tcell.KeyTab {
+			se.app.SetFocus(btnEditTable)
+			return nil
+		}
+		return event
+	})
+
+	btnEditTable.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
+		if event.Key() == tcell.KeyBacktab {
+			se.app.SetFocus(btnEditColumn)
+			return nil
+		}
+		if event.Key() == tcell.KeyTab {
+			se.app.SetFocus(btnDelTable)
+			return nil
+		}
+		return event
+	})
+
+	btnDelTable.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
+		if event.Key() == tcell.KeyBacktab {
+			se.app.SetFocus(btnEditTable)
+			return nil
+		}
+		if event.Key() == tcell.KeyTab {
+			se.app.SetFocus(btnBack)
+			return nil
+		}
+		return event
+	})
+
+	btnBack.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
+		if event.Key() == tcell.KeyBacktab {
+			se.app.SetFocus(btnDelTable)
+			return nil
+		}
+		if event.Key() == tcell.KeyTab {
+			se.app.SetFocus(colTable)
+			return nil
+		}
+		return event
+	})
+
+	btnFlex.AddItem(btnNewCol, 0, 1, true).
+		AddItem(btnEditColumn, 0, 1, false).
+		AddItem(btnEditTable, 0, 1, false).
+		AddItem(btnDelTable, 0, 1, false).
+		AddItem(btnBack, 0, 1, false)
+
+	colTable.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
+		if event.Key() == tcell.KeyEscape {
+			se.pages.SwitchToPage("schema-editor")
+			se.pages.RemovePage("table-editor")
+			return nil
+		}
+		if event.Key() == tcell.KeyTab {
+			se.app.SetFocus(btnNewCol)
+			return nil
+		}
+		if event.Key() == tcell.KeyEnter {
+			row, _ := colTable.GetSelection()
+			if row > 0 { // Skip header row
+				colName := columnNames[row-1]
+				column := table.Columns[colName]
+				se.showColumnEditor(schemaIndex, tableIndex, row-1, column)
+				return nil
+			}
+		}
+		if event.Rune() == 'c' {
+			row, _ := colTable.GetSelection()
+			if row > 0 && row <= len(columnNames) { // Skip header row
+				colName := columnNames[row-1]
+				column := table.Columns[colName]
+				se.showColumnEditor(schemaIndex, tableIndex, row-1, column)
+			}
+			return nil
+		}
+		if event.Rune() == 'b' {
+			se.pages.RemovePage("table-editor")
+			se.pages.SwitchToPage("schema-editor")
+			return nil
+		}
+		return event
+	})
+
+	flex.AddItem(title, 1, 0, false).
+		AddItem(info, 2, 0, false).
+		AddItem(colTable, 0, 1, true).
+		AddItem(btnFlex, 1, 0, false)
+
+	se.pages.AddPage("table-editor", flex, true, true)
+}
+
+// showNewTableDialog shows dialog to create a new table
+func (se *SchemaEditor) showNewTableDialog(schemaIndex int) {
+	form := tview.NewForm()
+
+	tableName := ""
+	description := ""
+
+	form.AddInputField("Table Name", "", 40, nil, func(value string) {
+		tableName = value
+	})
+
+	form.AddInputField("Description", "", 40, nil, func(value string) {
+		description = value
+	})
+
+	form.AddButton("Save", func() {
+		if tableName == "" {
+			return
+		}
+
+		se.CreateTable(schemaIndex, tableName, description)
+
+		schema := se.db.Schemas[schemaIndex]
+		se.pages.RemovePage("new-table")
+		se.pages.RemovePage("schema-editor")
+		se.showSchemaEditor(schemaIndex, schema)
+	})
+
+	form.AddButton("Back", func() {
+		schema := se.db.Schemas[schemaIndex]
+		se.pages.RemovePage("new-table")
+		se.pages.RemovePage("schema-editor")
+		se.showSchemaEditor(schemaIndex, schema)
+	})
+
+	form.SetBorder(true).SetTitle(" New Table ").SetTitleAlign(tview.AlignLeft)
+	form.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
+		if event.Key() == tcell.KeyEscape {
+			se.showExitConfirmation("new-table", "schema-editor")
+			return nil
+		}
+		return event
+	})
+
+	se.pages.AddPage("new-table", form, true, true)
+}
+
+// showNewTableDialogFromList shows dialog to create a new table with schema selection
+func (se *SchemaEditor) showNewTableDialogFromList() {
+	form := tview.NewForm()
+
+	tableName := ""
+	description := ""
+	selectedSchemaIdx := 0
+
+	// Create schema dropdown options
+	schemaOptions := make([]string, len(se.db.Schemas))
+	for i, schema := range se.db.Schemas {
+		schemaOptions[i] = schema.Name
+	}
+
+	form.AddInputField("Table Name", "", 40, nil, func(value string) {
+		tableName = value
+	})
+
+	form.AddDropDown("Schema", schemaOptions, 0, func(option string, optionIndex int) {
+		selectedSchemaIdx = optionIndex
+	})
+
+	form.AddInputField("Description", "", 40, nil, func(value string) {
+		description = value
+	})
+
+	form.AddButton("Save", func() {
+		if tableName == "" {
+			return
+		}
+
+		se.CreateTable(selectedSchemaIdx, tableName, description)
+
+		se.pages.RemovePage("new-table-from-list")
+		se.pages.RemovePage("tables")
+		se.showTableList()
+	})
+
+	form.AddButton("Back", func() {
+		se.pages.RemovePage("new-table-from-list")
+		se.pages.RemovePage("tables")
+		se.showTableList()
+	})
+
+	form.SetBorder(true).SetTitle(" New Table ").SetTitleAlign(tview.AlignLeft)
+	form.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
+		if event.Key() == tcell.KeyEscape {
+			se.showExitConfirmation("new-table-from-list", "tables")
+			return nil
+		}
+		return event
+	})
+
+	se.pages.AddPage("new-table-from-list", form, true, true)
+}
+
+// showEditTableDialog shows dialog to edit table properties
+func (se *SchemaEditor) showEditTableDialog(schemaIndex, tableIndex int) {
+	table := se.db.Schemas[schemaIndex].Tables[tableIndex]
+	form := tview.NewForm()
+
+	// Local variables to collect changes
+	newName := table.Name
+	newDescription := table.Description
+
+	form.AddInputField("Table Name", table.Name, 40, nil, func(value string) {
+		newName = value
+	})
+
+	form.AddTextArea("Description", table.Description, 40, 5, 0, func(value string) {
+		newDescription = value
+	})
+
+	form.AddButton("Save", func() {
+		// Apply changes using dataops
+		se.UpdateTable(schemaIndex, tableIndex, newName, newDescription)
+
+		table := se.db.Schemas[schemaIndex].Tables[tableIndex]
+		se.pages.RemovePage("edit-table")
+		se.pages.RemovePage("table-editor")
+		se.showTableEditor(schemaIndex, tableIndex, table)
+	})
+
+	form.AddButton("Back", func() {
+		// Discard changes - don't apply them
+		table := se.db.Schemas[schemaIndex].Tables[tableIndex]
+		se.pages.RemovePage("edit-table")
+		se.pages.RemovePage("table-editor")
+		se.showTableEditor(schemaIndex, tableIndex, table)
+	})
+
+	form.SetBorder(true).SetTitle(" Edit Table ").SetTitleAlign(tview.AlignLeft)
+	form.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
+		if event.Key() == tcell.KeyEscape {
+			se.showExitConfirmation("edit-table", "table-editor")
+			return nil
+		}
+		return event
+	})
+
+	se.pages.AddPage("edit-table", form, true, true)
+}
--- a/pkg/ui/ui_rules.md
+++ b/pkg/ui/ui_rules.md
@@ -0,0 +1,299 @@
+# UI Rules and Guidelines
+
+## Layout Requirements
+
+All layouts / forms must be in seperate files regarding their domain or entity. 
+
+### Screen Layout Structure
+
+All screens must follow this consistent layout:
+
+1. **Title at the Top** (1 row, fixed height)
+   - Centered bold text: `[::b]Title Text`
+   - Use `tview.NewTextView()` with `SetTextAlign(tview.AlignCenter)`
+   - Enable dynamic colors: `SetDynamicColors(true)`
+
+2. **Content in the Middle** (flexible height)
+   - Tables, lists, forms, or info displays
+   - Uses flex weight of 1 for dynamic sizing
+
+3. **Action Buttons at the Bottom** (1 row, fixed height)
+   - Must be in a horizontal flex container
+   - Action buttons before Back button
+   - Back button is always last
+
+### Form Layout Structure
+
+All forms must follow this button order:
+
+1. **Save Button** (always first)
+   - Label: "Save"
+   - Primary action that commits changes
+
+2. **Delete Button** (optional, only for edit forms)
+   - Label: "Delete"
+   - Only shown when editing existing items (not for new items)
+   - Must show confirmation dialog before deletion
+
+3. **Back Button** (always last)
+   - Label: "Back"
+   - Returns to previous screen without saving
+
+**Button Order Examples:**
+- **New Item Forms:** Save, Back
+- **Edit Item Forms:** Save, Delete, Back
+
+## Tab Navigation
+
+All screens must implement circular tab navigation:
+
+1. **Tab Key** - Moves focus to the next focusable element
+2. **Shift+Tab (BackTab)** - Moves focus to the previous focusable element
+3. **At the End** - Tab cycles back to the first element
+4. **At the Start** - Shift+Tab cycles back to the last element
+
+**Navigation Flow Pattern:**
+- Each widget must handle both Tab and BackTab
+- First widget: BackTab → Last widget, Tab → Second widget
+- Middle widgets: BackTab → Previous widget, Tab → Next widget
+- Last widget: BackTab → Previous widget, Tab → First widget
+
+## Keyboard Shortcuts
+
+### Standard Keys
+
+- **ESC** - Cancel current operation or go back to previous screen
+- **Tab** - Move focus forward (circular)
+- **Shift+Tab** - Move focus backward (circular)
+- **Enter** - Activate/select current item in tables and lists
+
+### Letter Key Shortcuts
+
+- **'n'** - New (create new item)
+- **'b'** - Back (return to previous screen)
+- **'e'** - Edit (edit current item)
+- **'d'** - Delete (delete current item)
+- **'c'** - Edit Column (in table editor)
+- **'s'** - Manage Schemas (in main menu)
+- **'t'** - Manage Tables (in main menu)
+- **'q'** - Quit/Exit (in main menu)
+
+## Consistency Requirements
+
+1. **Layout Structure** - All screens: Title (top) → Content (middle) → Buttons (bottom)
+2. **Title Format** - Bold (`[::b]`), centered, dynamic colors enabled
+3. **Tables** - Fixed headers (row 0), borders enabled, selectable rows
+4. **Buttons** - Include keyboard shortcuts in labels (e.g., "Back [b]")
+5. **Forms** - Button order: Save, Delete (if edit), Back
+6. **Destructive Actions** - Always show confirmation dialogs
+7. **ESC Key** - All screens support ESC to go back
+8. **Action Buttons** - Positioned before Back button, in logical order
+9. **Data Refresh** - Always refresh the previous screen when returning from a form or dialog
+
+## Widget Naming Conventions
+
+- **Tables:** `schemaTable`, `tableTable`, `colTable`
+- **Buttons:** Prefix with `btn` (e.g., `btnBack`, `btnDelete`, `btnNewSchema`)
+- **Flex containers:** `btnFlex` for button containers, `flex` for main layout
+- **Forms:** `form`
+- **Lists:** `list`, `tableList`
+- **Text views:** `title`, `info`
+- Use camelCase for all variable names
+
+## Page Naming Conventions
+
+Use descriptive kebab-case names:
+
+- **Main screens:** `main`, `schemas`, `tables`, `schema-editor`, `table-editor`, `column-editor`
+- **Load/Save screens:** `load-database`, `save-database`
+- **Creation dialogs:** `new-schema`, `new-table`, `new-column`, `new-table-from-list`
+- **Edit dialogs:** `edit-schema`, `edit-table`
+- **Confirmations:** `confirm-delete-schema`, `confirm-delete-table`, `confirm-delete-column`
+- **Exit confirmations:** `exit-confirm`, `exit-editor-confirm`
+- **Status dialogs:** `error-dialog`, `success-dialog`
+
+## Dialog and Confirmation Rules
+
+### Confirmation Dialogs
+
+1. **Delete Confirmations** - Required for all destructive actions
+   - Show item name in confirmation text
+   - Buttons: "Cancel", "Delete"
+   - ESC key dismisses dialog
+
+2. **Exit Confirmations** - Required when exiting forms with potential unsaved changes
+   - Text: "Exit without saving changes?"
+   - Buttons: "Cancel", "No, exit without saving"
+   - ESC key confirms exit
+
+3. **Save Confirmations** - Optional, based on context
+   - Use for critical data changes
+   - Clear description of what will be saved
+
+### Dialog Behavior
+
+- All dialogs must capture ESC key for dismissal
+- Modal dialogs overlay current screen
+- Confirmation dialogs use `tview.NewModal()`
+- Remove dialog page after action completes
+
+## Data Refresh Rules
+
+When returning from any form or dialog, the previous screen must be refreshed to show updated data. If Tables exists in the screen, their data must be updated:
+
+1. **After Save** - Remove and recreate the previous screen to display updated data
+2. **After Delete** - Remove and recreate the previous screen to display remaining data
+3. **After Cancel/Back** - Remove and recreate the previous screen (data may have changed)
+4. **Implementation Pattern** - Remove the current page, remove the previous page, then recreate the previous page with fresh data
+
+**Why This Matters:**
+- Ensures users see their changes immediately
+- Prevents stale data from being displayed
+- Maintains data consistency across the UI
+- Avoids confusion from seeing outdated information
+
+**Example Flow:**
+```
+User on Schema List → Opens Edit Schema Form → Saves Changes →
+Returns to Schema List (refreshed with updated schema data)
+```
+
+## Big Loading/Saving Operations
+
+When loading big changes, files or data, always give a load completed or load error dialog.
+Do the same with saving.
+This informs the user what happens.
+When data is dirty, always ask the user to save when trying to exit.
+
+### Load/Save Screens
+
+- **Load Screen** (`load-database`) - Shown when no source is specified via command line
+  - Format dropdown (dbml, dctx, drawdb, graphql, json, yaml, gorm, bun, drizzle, prisma, typeorm, pgsql)
+  - File path input (for file-based formats)
+  - Connection string input (for database formats like pgsql)
+  - Load button [l] - Loads the database
+  - Create New button [n] - Creates a new empty database
+  - Exit button [q] - Exits the application
+  - ESC key exits the application
+
+- **Save Screen** (`save-database`) - Accessible from main menu with 'w' key
+  - Format dropdown (same as load screen)
+  - File path input
+  - Help text explaining format requirements
+  - Save button [s] - Saves the database
+  - Back button [b] - Returns to main menu
+  - ESC key returns to main menu
+  - Pre-populated with existing save configuration if available
+
+### Status Dialogs
+
+- **Error Dialog** (`error-dialog`) - Shows error messages with OK button and ESC to dismiss
+- **Success Dialog** (`success-dialog`) - Shows success messages with OK button, ESC to dismiss, and optional callback on close
+
+## Screen Organization
+
+Organize UI code into these files:
+
+### UI Files (Screens and Dialogs)
+
+- **editor.go** - Core `SchemaEditor` struct, constructor, `Run()` method, helper functions
+- **main_menu.go** - Main menu screen
+- **load_save_screens.go** - Database load and save screens
+- **database_screens.go** - Database edit form
+- **schema_screens.go** - Schema list, schema editor, new/edit schema dialogs
+- **table_screens.go** - Tables list, table editor, new/edit table dialogs
+- **column_screens.go** - Column editor, new column dialog
+- **domain_screens.go** - Domain list, domain editor, new/edit domain dialogs
+- **dialogs.go** - Confirmation dialogs (exit, delete)
+
+### Data Operations Files (Business Logic)
+
+- **schema_dataops.go** - Schema CRUD operations (Create, Read, Update, Delete)
+- **table_dataops.go** - Table CRUD operations
+- **column_dataops.go** - Column CRUD operations
+
+## Code Separation Rules
+
+### UI vs Business Logic
+
+1. **UI Files** - Handle only presentation and user interaction
+   - Display data in tables, lists, and forms
+   - Capture user input
+   - Navigate between screens
+   - Show/hide dialogs
+   - Call dataops methods for actual data changes
+
+2. **Dataops Files** - Handle only business logic and data manipulation
+   - Create, read, update, delete operations
+   - Data validation
+   - Data structure manipulation
+   - Return created/updated objects or success/failure status
+   - No UI code or tview references
+
+### Implementation Pattern
+
+#### Creating New Items
+
+**Bad (Direct Data Manipulation in UI):**
+```go
+form.AddButton("Save", func() {
+    schema := &models.Schema{Name: name, Description: desc, ...}
+    se.db.Schemas = append(se.db.Schemas, schema)
+})
+```
+
+**Good (Using Dataops Methods):**
+```go
+form.AddButton("Save", func() {
+    se.CreateSchema(name, description)
+})
+```
+
+#### Editing Existing Items
+
+**Bad (Modifying Data in onChange Callbacks):**
+```go
+form.AddInputField("Name", column.Name, 40, nil, func(value string) {
+    column.Name = value  // Changes immediately as user types!
+})
+form.AddButton("Save", func() {
+    // Data already changed, just refresh screen
+})
+```
+
+**Good (Local Variables + Dataops on Save):**
+```go
+// Store original values
+originalName := column.Name
+newName := column.Name
+
+form.AddInputField("Name", column.Name, 40, nil, func(value string) {
+    newName = value  // Store in local variable
+})
+
+form.AddButton("Save", func() {
+    // Apply changes only when Save is clicked
+    se.UpdateColumn(schemaIndex, tableIndex, originalName, newName, ...)
+    // Then refresh screen
+})
+
+form.AddButton("Back", func() {
+    // Discard changes - don't apply local variables
+    // Just refresh screen
+})
+```
+
+### Why This Matters
+
+**Edit Forms Must Use Local Variables:**
+1. **Deferred Changes** - Changes only apply when Save is clicked
+2. **Cancellable** - Back button discards changes without saving
+3. **Handles Renames** - Original name preserved to update map keys correctly
+4. **User Expectations** - Save means "commit changes", Back means "cancel"
+
+This separation ensures:
+- Cleaner, more maintainable code
+- Reusable business logic
+- Easier testing
+- Clear separation of concerns
+- Proper change management (save vs cancel)