17.4. ACID Transactions

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Traditionally, transaction processing systems support ACID properties. ACID is an acronym for Atomic, Consistent, Isolated, and Durable. A unit of work has traditionally been considered transactional only if the ACID properties are maintained, as describe in ACID Properties.

ACID Properties

Atomicity: The transaction executes completely, or not at all.
Consistency: The effects of the transaction preserve the internal consistency of an underlying data structure.
Isolated: The transaction runs as if it were running alone, with no other transactions running, and is not visible to other transactions.
Durable: The transaction's results are not lost in the event of a failure.

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