96. delete anomaly — example 2

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

What is a delete anomaly?

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Answer & Explanation

4 Answers

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Option A

A successful COMMIT.

Additional Explanation

This option is incorrect for the stated requirement.

Verified Correct Answer

Option B

Deleting one fact unintentionally removes the only stored copy of another fact.

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 C

Deleting an index only.

Additional Explanation

This option is incorrect for the stated requirement.

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Option D

A query returning duplicates by design.

Additional Explanation

This option is incorrect for the stated requirement.