Multiple choice

In a multi-user database, if two users wish to update the same record at the same time, they are prevented by

  1. jamming

  2. password

  3. documentation

  4. record lock
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Record locking is a concurrency control mechanism that prevents conflicting simultaneous updates to the same database record. When one user acquires a lock on a record, other users must wait until the lock is released before they can modify that record. This prevents lost updates and ensures data integrity in multi-user database environments.

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