Computer Science – Distributed – Parallel – and Cluster Computing
Scientific paper
2010-05-11
International Journal of Wireless & Mobile Networks 2.2 (2010) 172-185
Computer Science
Distributed, Parallel, and Cluster Computing
14 Pages, IJWMN
Scientific paper
10.5121/ijwmn.2010.2212
In mobile database environments, multiple users may access similar data items irrespective of their physical location leading to concurrent access anomalies. As disconnections and mobility are the common characteristics in mobile environment, performing concurrent access to a particular data item leads to inconsistency. Most of the approaches use locking mechanisms to achieve concurrency control. However this leads to increase in blocking and abort rate. In this paper an optimistic concurrency control strategy using on-demand multicasting is proposed for mobile database environments which guarantees consistency and introduces application-specific conflict detection and resolution strategies. The simulation results specify increase in system throughput by reducing the transaction abort rates as compared to the other optimistic strategies proposed in literature.
Moiz Salman Abdul
Rajamani Lakshmi
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