Question

What is the difference between rollback and a single operation rollback?

1) Rollback applies to a whole transaction, while a single operation rollback applies to a single operation.
2) Rollback applies to a single operation, while a single operation rollback applies to a whole transaction.
3) Rollback and single operation rollback are the same thing.
4) Rollback and single operation rollback are different concepts.

Answer 1

The correct answer is option 1: Rollback refers to reversing an entire transaction, while single operation rollback concerns reversing a single operation or a set of operations within a larger transaction.

Step-by-step explanation:

The difference between rollback and a single operation rollback concerns the scope of the operation within a database transaction. Option 1 is correct: Rollback refers to the reversal of an entire transaction. This means that if a transaction consists of multiple operations, a rollback will undo all operations that have occurred within that transaction up to the point of execution of the rollback command.

In contrast, a single operation rollback (which might be more commonly referred to as a partial rollback or savepoint rollback) applies to a single operation or to a set of operations within a larger transaction. This distinction is important in database management, where maintaining data integrity and ensuring correct transaction processing are critical.