imkjangid/PyORM — reverse-engineered prompt

Build me a simple Python ORM learning project that shows how to work with a relational database using Python objects instead of raw SQL.

I want it to use SQLAlchemy with a small SQLite database and clear example models, like users, posts, or similar related data. Include easy to run examples for creating records, reading them, updating them, deleting them, and showing relationships between tables. Keep the code clean and beginner friendly so someone learning ORM can understand what each part does.

Please add a short README that explains what ORM means, why it’s useful, how to run the demo, and what each example file is for. It should feel like a practical tutorial, not a big production app. Use sensible defaults and comments where helpful.