Abstract
In a mobile environment, due to the various constraints inherited from limitations of wireless communication and mobile devices, checking for integrity constraints to maintain the consistent state of mobile databases is an important issue that needs to be addressed. Hence, in this paper we propose a strategy for caching relevant data items needed during the process of checking integrity constraints of mobile databases. This is achieved by analyzing the relationships among the integrity tests (simplified form of integrity constraints) to be evaluated for a given update operation. Our strategy improves the checking mechanism by not only preventing delays during the process of checking constraints and performing the update but also by minimizing the amount of data items to be cached. Hence, our strategy speeds up the checking process.
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