2143. Audit: Find records changed by an unexpected actor. — Node.js + Express + mysql2

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

In a audit module, solve this as a production problem using Node.js + Express + mysql2: Find records changed by an unexpected actor. Provide the SQL, explain the logic, show safe application integration, and mention failure/edge cases.

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Answer & Explanation

4 Answers

Verified

Option A

UPDATE table_name SET status='active';

Additional Explanation

Incorrect: it does not satisfy the stated business rule and can return/change unintended data.

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Option B

DELETE FROM table_name;

Additional Explanation

Incorrect: it does not satisfy the stated business rule and can return/change unintended data.

Verified Correct Answer

Option C

SELECT * FROM audit_logs WHERE actor_role NOT IN ('admin','manager');

Additional Explanation

The allowed roles are policy-specific; this query highlights potentially unexpected changes.

Verified

Option D

SELECT * FROM table_name;

Additional Explanation

Incorrect: it does not satisfy the stated business rule and can return/change unintended data.