Queues In A Database System concurrency control manager .… lock lock request grant CPU manager transaction transaction source manager transaction page monitor page reply request page disk manager buffer request 州 manager page reply Database System Concepts,5th Ed. 23.5 ©Silberschat乜，Korth and SudarshanDatabase System Concepts, 5 23.5 ©Silberschatz, Korth and Sudarshan th Ed. 5 Queues In A Database System