Distributed and Parallel Databases
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In a mobile computing environment, users can perform on-line transaction processing independent of their physical location. In a mobile environment, multiple mobile hosts may update the data simultaneously which may result in inconsistency of data. The traditional techniques use the concept of locking for achieving the concurrency control in mobile environments. This may not be feasible in mobile environments due to variable bandwidth, frequent disconnections etc. In this paper we propose a lockless concurrency control mechanism which helps in reducing the communication overhead and enhances the transaction throughput. The waiting time for execution of the transaction is reduced and the resources are not unnecessarily locked. The simulation results specify the performance trade off benefits of the proposed approach.