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If database modifications occur while the transaction is still active, the transaction is said to use the ___________technique.

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If database modifications occur while the transaction is still active, the transaction is said to use the ___________technique.

(a) Deferred-modification

(b) Late-modification

(c) Immediate-modification

(d) Undo

I have been asked this question in final exam.

I'm obligated to ask this question of Recovery in chapter Recovery System of Database Management

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The correct answer is (c) Immediate-modification

Best explanation: We say a transaction modifies the database if it performs an update on a disk buffer, or on the disk itself; updates to the private part of main memory do not count as database modifications.

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