Sunday, April 15, 2012

Optimistic/Pessimistic Concurrency

The technique that first investigates whether other transactions have changed values in a row before permitting changes to be submitted.

Contrast with pessimistic concurrency control, which locks the record to avoid concurrency conflicts.

Optimistic control is so termed because it considers the chances of one transaction interfering with another to be unlikely.

http://msdn.microsoft.com/en-us/library/bb399373(v=vs.110).aspx

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