{
  "name": "test_db",
  "description": "Test database for JSON reader",
  "database_type": "pgsql",
  "schemas": [
    {
      "name": "public",
      "tables": [
        {
          "name": "users",
          "schema": "public",
          "description": "User accounts table",
          "columns": {
            "id": {
              "name": "id",
              "table": "users",
              "schema": "public",
              "type": "bigint",
              "not_null": true,
              "auto_increment": true,
              "is_primary_key": true
            },
            "email": {
              "name": "email",
              "table": "users",
              "schema": "public",
              "type": "varchar",
              "length": 255,
              "not_null": true,
              "comment": "User email address"
            },
            "name": {
              "name": "name",
              "table": "users",
              "schema": "public",
              "type": "varchar",
              "length": 100,
              "not_null": false
            },
            "created_at": {
              "name": "created_at",
              "table": "users",
              "schema": "public",
              "type": "timestamp",
              "not_null": true,
              "default": "CURRENT_TIMESTAMP"
            }
          },
          "indexes": {
            "idx_users_email": {
              "name": "idx_users_email",
              "table": "users",
              "schema": "public",
              "columns": ["email"],
              "unique": true,
              "type": "btree"
            }
          },
          "constraints": {},
          "relationships": {}
        },
        {
          "name": "posts",
          "schema": "public",
          "columns": {
            "id": {
              "name": "id",
              "table": "posts",
              "schema": "public",
              "type": "bigint",
              "not_null": true,
              "auto_increment": true,
              "is_primary_key": true
            },
            "user_id": {
              "name": "user_id",
              "table": "posts",
              "schema": "public",
              "type": "bigint",
              "not_null": true
            },
            "title": {
              "name": "title",
              "table": "posts",
              "schema": "public",
              "type": "varchar",
              "length": 200,
              "not_null": true
            },
            "content": {
              "name": "content",
              "table": "posts",
              "schema": "public",
              "type": "text",
              "not_null": false
            }
          },
          "indexes": {},
          "constraints": {
            "fk_posts_user": {
              "name": "fk_posts_user",
              "type": "foreign_key",
              "table": "posts",
              "schema": "public",
              "columns": ["user_id"],
              "referenced_table": "users",
              "referenced_schema": "public",
              "referenced_columns": ["id"],
              "on_delete": "CASCADE",
              "on_update": "CASCADE"
            }
          },
          "relationships": {}
        }
      ]
    }
  ]
}