How is transaction management implemented in Django ORM to ensure data integrity?

In Django ORM, transaction management is implemented using the context manager transaction.atomic(). It allows grouping multiple database operations into a single transaction, ensuring data integrity: if an exception occurs within the block, all changes are rolled back.

Example usage:

from django.db import transaction

with transaction.atomic():
    # multiple database operations
    obj1.save()
    obj2.save()
    # if an exception occurs here, changes will not be saved

You can also use the @transaction.atomic decorator for functions or methods.

Django automatically opens transactions for each HTTP request, but it can be explicitly managed for more complex scenarios.