American Journal of Applied Sciences

On Optimistic Concurrency Control for Real-Time Database Systems

Amer A. Ali

DOI : 10.3844/ajassp.2006.1706.1710

American Journal of Applied Sciences

Volume 3, Issue 2

Pages 1706-1710


The performance of database transaction processing system can be profoundly affected by the concurrency control method employed since it is necessary to preserve database integrity in a multi-user environment. In addition to satisfying the consistency requirement as in traditional database system, real-time database systems must also satisfy timing constraints. In this study we present a virtual run policy for the restarted first run optimistic transactions and compare its performance with optimistic concurrency control in firm real-time database system.


© 2006 Amer A. Ali. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.