7. transaction

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

What is a transaction?

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Answer & Explanation

4 Answers

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Option A

A SQL comment.

Additional Explanation

This option is incorrect for the stated requirement.

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Option B

A database table.

Additional Explanation

This option is incorrect for the stated requirement.

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Option C

A type of index.

Additional Explanation

This option is incorrect for the stated requirement.

Verified Correct Answer

Option D

A transaction is a logical unit of database work whose operations are committed together or rolled back according to transaction rules.

Additional Explanation

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