Instruction: Explain the mechanisms Django provides for managing database transactions.
Context: This question probes the candidate's understanding of transaction management in Django and their ability to ensure data integrity.
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Primarily, Django uses transactions to wrap each view function. This means that if the view function executes successfully, Django commits the transaction. If there's an exception, Django rolls back the transaction. This automatic handling is facilitated by Django's ATOMIC_REQUESTS setting, which, when enabled, makes sure that the database transactions are managed automatically, reducing the likelihood of database anomalies.
For more granular control, Django provides the transaction.atomic() decorator and context manager. This is particularly useful when you need to wrap a block of code within a transaction. When used, it ensures that the operations within the block are either all successfully committed to the database or rolled back in case of an error....