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Line 1: In [[computer science]], in the field of [[database]]s, '''optimistic concurrency control''', (OCC) is a [[concurrency control]] method used in [[relational database]]s without using [[Lock (computer science)\|lock]]ing. Optimistic Concurrency Control is based on the assumption that [[database transaction]]s mostly don't conflict with other transactions, and that allows OCC to be as permissive as possible in allowing transactions to execute. There are three phases in OCC:

Optimistic concurrency control: Difference between revisions