The broadcast-based data dissemination in wireless environments poses new challenging issues on data consistency of transaction processing. In this paper, we first adapt the optimistic concurrency control with forward validation to the broadcast environments. The adapted protocol gives autonomy between the mobile clients and the server such that the mobile clients can read consistent data off t...

Concurrency control is one of the main issues in the studies of real-time database systems. In this paper different distributed concurrency control methods are studied and evaluated in real-time system environment. Because optimistic concurrency control is promising candidate for real-time database systems, distributed optimistic concurrency control methods are discussed more detailed way. We p...

The concurrency control problem in database systems has been examined by many people and several concurrency control algorithms have been proposed. The most popular concurrency controls are two-phase locking and timestamp ordering. This paper reviews both algorithms and shows that they are special cases of a more general concurrency control algorithm. This concurrency control algorithm is descr...

This paper tries to generate an appropriate concurrency control program by using genetic programming (GP). Although two variables have been introduced for generating concurrency control programs, these made program generation difficult because of the explosion of combination. By limiting the usage of variables to one of two variables, an appropriate program could be generated. This method, howe...