Structure

tests/ ├── init.py # Marks this as a Python package ├── config.py # Configuration (e.g., database connection details) ├── schema.py # Table creation and schema definitions ├── csv_loader.py # CSV loading logic ├── validators.py # Validation checks (schema, logic, data quality) └── main.py # Entry point to tie everything together

init.py

Empty.

config.py

This file holds configuration details, such as database connection parameters and CSV file paths.

schema.py

This file defines the PostgreSQL table schemas with proper constraints.

csv_loader.py

Handles CSV parsing and loading into PostgreSQL.

validators.py

Contains all validation logic, adapted for PostgreSQL syntax.

main.py

Ties everything together and runs the validation.

Key Changes and Notes

PostgreSQL Integration:

• Replaced sqlite3 with psycopg2 for PostgreSQL connectivity.
• Added SERIAL for auto-incrementing IDs (PostgreSQL equivalent of SQLite’s INTEGER PRIMARY KEY).
• Moved some checks (e.g., coordinate ranges, allowed LANG/EVENT values) into schema-level CHECK constraints, leveraging PostgreSQL’s capabilities.

Modular Design:

• Separated concerns into configuration, schema, loading, validation, and execution.
• Each module can be independently tested or extended.

Error Handling:

• Added basic database connection error handling.
• Ensures the connection is closed in a finally block.

Execution:

Run the script with:

python main.py \
  --spatial /path/to/Spatial.csv \
  --linguistic /path/to/Linguistic.csv \
  --temporal /path/to/Temporal.csv \
  --sources /path/to/Sources.csv \
  --db-name your_db \
  --db-user your_user \
  --db-password your_password

Customization:

• Adjust column names in main.py to match your CSV files exactly.
• Add more validation rules in validators.py as needed.
• Modify schema.py if your constraints differ.