An Approach to Reduce Resource Contention while Scheduling Time Constrained Long Running Activity in Active Database System

1 Active database system with ECA rule has been found to provide an elegant framework to capture the semantics of many real life applications. In active database system, the long running activities can be modeled as long duration transaction where a transaction may be viewed as collection of sub transactions. A Real Time Database Management System functions as a repository of the data and it provides the efficient storage and retrieval of data. However, real time database systems have an added burden of processing the transaction and meeting the deadline. Performance of real time database system largely depends on contention for resources. Higher the resource contention among the concurrent transaction, leads to high probability of slipping the deadlines. In this paper, we present how can we model long running activities and how the contention for resources may be reduced by exploiting cooperation semantics.