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Chap  21  –  Concurrency Control Chap  21  –  Concurrency Control

Chap 21 – Concurrency Control - PowerPoint Presentation

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Uploaded On 2018-02-14

Chap 21 – Concurrency Control - PPT Presentation

Database Concurrency Control 1 Purpose of Concurrency Control To enforce Isolation through mutual exclusion among conflicting transactions To preserve database consistency through consistency preserving execution of transactions ID: 631367

lock read concurrency write read lock write concurrency control item database transaction phase locking data unlock operation granularity timestamp version items deadlock

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