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Durability is an essential property of the ACID model in database transactions, which stands for Atomicity, Consistency, Isolation, and Durability. Durability guarantees that once a transaction has been committed, its changes are permanent, even in cases of system crashes or power failures. This property is typically ensured through logging and backup mechanisms that maintain committed data on stable storage, such as hard drives or SSDs, rather than volatile memory. Durability is crucial in systems where data integrity and reliability are vital, as it ensures that the database remains consistent and reliable after unexpected failures, reinforcing the resilience of the database system. Option A - This describes the Isolation property, which ensures that concurrent transactions do not interfere with each other. Option B - Reversibility is not a part of the Durability property; rather, it aligns more with error handling and rollback mechanisms related to Atomicity. Option C - Atomicity ensures that all operations within a transaction are treated as a single unit, completing fully or not at all, unrelated to Durability. Option E - While securing transactions is essential, it is more related to database security rather than the concept of Durability within ACID properties.
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