http://www.isnare.com/?s=author&a=Kalpesh Computers and Technology Kalpesh Wed, 16 Apr 2008 00:00:00 -0700 http://www.isnare.com/?aid=130043&ca=Computers+and+Technology In a multi-user environment, there are two models for updating data in a database: optimistic concurrency and pessimistic concurrency. Pessimistic concurrency involves locking the data at the database when you read it. You essentially lock the database record and don't allow anyone to touch it until...