2664. Audit: Find changes made outside business hours. — PHP PDO

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

In a audit module, solve this as a production problem using PHP PDO: Find changes made outside business hours. Provide the SQL, explain the logic, show safe application integration, and mention failure/edge cases.

Looking for the latest Sarkari Result 2026 updates? Check the latest government exam results, merit lists and result updates on Sarkari Resultess.

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.

Verified Correct Answer

Option B

SELECT * FROM audit_logs WHERE HOUR(created_at)<9 OR HOUR(created_at)>=18;

Additional Explanation

Define business hours and timezone explicitly for production reporting.

Verified

Option C

SELECT * FROM table_name;

Additional Explanation

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

Verified

Option D

DELETE FROM table_name;

Additional Explanation

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