2727. Attendance: Find students absent more than five times in a month. — Java Spring/JDBC

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

In a attendance module, solve this as a production problem using Java Spring/JDBC: Find students absent more than five times in a month. Provide the SQL, explain the logic, show safe application integration, and mention failure/edge cases.

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Answer & Explanation

4 Answers

Verified Correct Answer

Option A

SELECT student_id,DATE_FORMAT(attendance_date,'%Y-%m') month,SUM(status='absent') absent_days FROM attendance GROUP BY student_id,DATE_FORMAT(attendance_date,'%Y-%m') HAVING SUM(status='absent')>5;

Additional Explanation

Conditional aggregation counts absence records per student and month.

Verified

Option B

DELETE FROM table_name;

Additional Explanation

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

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

UPDATE table_name SET status='active';

Additional Explanation

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