What happens if I delete a migration file?

Never manually delete a migration file unless you are a deep expert. It breaks the sequential history of the database schema, causing catastrophic sync errors the next time you try to migrate.

Why use auto_now_add=True?

When applied to a DateTimeField, `auto_now_add=True` automatically saves the exact current server timestamp when the object is first created. It is perfect for 'created_at' fields.

Do I need to write an ID field?

No. By default, Django automatically injects a primary key integer field named `id` into every model, which auto-increments with each new record.

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