A mechanism that temporarily restricts access to a database record to maintain data integrity when multiple users or transactions try to access it simultaneously. While one transaction holds the lock, others cannot modify the same data. The lock is released (unlocked) when the transaction completes, granting access to waiting transactions.

Past questions testing this term · 1 questions

• 2016h28a #81複数の利用者がデータベースの同じレコードを更新するときに，データの整合性を保つために行う制御として，適切なものはどれか。