TY - JOUR AU - Ali, Amer A. PY - 2006 TI - On Optimistic Concurrency Control for Real-Time Database Systems JF - American Journal of Applied Sciences VL - 3 IS - 2 DO - 10.3844/ajassp.2006.1706.1710 UR - https://thescipub.com/abstract/ajassp.2006.1706.1710 AB - 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.