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SQL – SQL –

SQL – - PowerPoint Presentation

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Uploaded On 2017-05-31

SQL – - PPT Presentation

  Shared and Exclusive Locks Problem With only one type of lock a transaction must acquire the lock even if it only need to read It then blocks other readers which wouldnt have generated a conflict ID: 554528

transaction lock exclusive locks lock transaction locks exclusive shared write read action transactions element writing intervening preceded locked phase

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