Reliable Transaction Standards

To ensure that these transactions are processed correctly, a TP must adhere to four key transaction properties known as ACID. An ACID-compliant TP ensures that each transaction is:

Atomic   Each transaction must be carried out completely or not at all.

Consistent   Data must be processed in a way that maintains the structural integrity of the database.

Isolated   Transactions must be carried out sequentially so that a transaction cannot access data that is already involved in a transaction.

Durable   Completed transactions must be stored in a way that enables recovery of the transaction results even if the system fails.

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