SQL SERVER – ACID (Atomicity, Consistency, Isolation, Durability)

ACID (an acronymn for Atomicity Consistency Isolation Durability) is a concept that Database Professionals generally look for when evaluating databases and application architectures. For a reliable database all this four attributes should be achieved.

Atomicity is an all-or-none proposition.

Consistency guarantees that a transaction never leaves your database in a half-finished state.

Isolation keeps transactions separated from each other until they’re finished.

Durability guarantees that the database will keep track of pending changes in such a way that the server can recover from an abnormal termination.
Above four rules are very important for any developers dealing with databases.

Reference : Pinal Dave (http://blog.SQLAuthority.com)

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