ACID properties of a database

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Database systems which include transaction support are often characterized or derised for their support of the following "ACID properties":

  • Atomicity : The entire sequence of actions must be either completed or aborted. The transaction cannot be partially successful.
  • Consistency : The transaction takes the resources from one consistent state to another.
  • Isolation : A transaction's effect is not visible to other transactions until the transaction is committed.
  • Durability : Changes made by the committed transaction are permanent and must survive system failure.

See also: Database Transactions, Commit, Rollback

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