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PERFORMANCE EVALUATION OF REAL TIME DATABASE SYSTEMS IN DISTRIBUTED ENVIRONMENT

Transaction scheduling plays an important role in deciding the performance of a real time database system (RTDBS) in distributed environment. It has been demonstrated that the priority based scheduling enhances the performance of a RTDBS in distributed environment. The performance is primarily measured by the number of transactions completed within a unit time. In real-time applications, timing and criticality characteristics of transactions must be taken into account. In this paper, we examine the performance of real time database systems in distributed environment. The deadline guarantee ratio and average response times are the primary performance measures. There have been performance studies on real-time database systems, but most of them were performed using simulation. This work demonstrates the feasibility of developing real time database systems in distributed with an acceptable performance.