A processing model that treats a series of related database operations as a single atomic unit, guaranteeing that either all operations succeed (commit) or all are undone (rollback). It is essential for business processes such as bank transfers and inventory updates that require data consistency, and relies on a log file to support recovery from failures.

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• 2017h29a #76データベースの処理に関する次の記述中の a, b に入れる字句の適切な組合せはどれか。 データベースに対する処理の一貫性を保証するために，関連する一連の処理を一…