24. deadlock

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

What is a database deadlock?

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

A missing primary key only.

Additional Explanation

This option is incorrect for the stated requirement.

Verified

Option B

A table with zero rows.

Additional Explanation

This option is incorrect for the stated requirement.

Verified Correct Answer

Option C

A deadlock occurs when concurrent transactions hold resources and wait for each other in a cycle, preventing progress until one is resolved.

Additional Explanation

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

Verified

Option D

A query with no WHERE clause.

Additional Explanation

This option is incorrect for the stated requirement.