33. transaction log

DBMS Published 30 Sept 2026 Updated 30 Sept 2026 0 Views Verified

What is a transaction log generally used for?

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Answer & Explanation

4 Answers

Verified Correct Answer

Option A

It records enough information about changes to support recovery and durability mechanisms, depending on the DBMS.

Additional Explanation

Correct implementation. Prefer parameterized queries in application code, validate affected rows for UPDATE/DELETE, and use transactions for related writes.

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Option B

It replaces every database index.

Additional Explanation

This option is incorrect for the stated requirement.

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Option C

It is only a list of SELECT statements.

Additional Explanation

This option is incorrect for the stated requirement.

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Option D

It is a user interface log.

Additional Explanation

This option is incorrect for the stated requirement.