Transaction processing in wireless distributed real-time databases

Use of portable computers with a wireless connection to distributed databases will become as popular as the use of mobile phones in the near future. The rapidly advancing technology in this area initiates new research areas and challenging research questions recently. One of the new areas is to support real-time database systems, with wireless network. In this paper, we have built a model with sufficient details of a wireless distributed real-time database system (WDRTDBS) and have performed simulation experiments to identify, the effect of wireless bandwidth, which is one of the most scarce resources in a wireless environment, on the performance of distributed real-time database systems. Through the experiments, we are trying to figure out the criterion for building efficient wireless DRTDBS in terms of performance. The simulation results reveal that the call duration, which may lead to call blocking and prolonged call waiting, causes much impact on the performance of the DRTDBS in terms of resource contention and transaction deadline missing.