Efficient Cache Management Protocol Based on Data Locality in Mobile DBMSs
ADBIS-DASFAA '00 Proceedings of the East-European Conference on Advances in Databases and Information Systems Held Jointly with International Conference on Database Systems for Advanced Applications: Current Issues in Databases and Information Systems
Certification reports: supporting transactions in wireless systems
ICDCS '97 Proceedings of the 17th International Conference on Distributed Computing Systems (ICDCS '97)
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As the server in mobile environments may not have any information about the state of its clients' cache(stateless server), using broadcasting approach to transmit the list of updated data to numerous concurrent mobile clients is an attractive approach. In this paper, a new concurrency control protocol is proposed to reduce aborts of concurrent transactions. The proposed protocol can improve the throughput of transactions by increasing the number of transactions which can be committed by the server during the same broadcasting interval. For this, with the proposed protocol, the server delays the certification of transactions until the next broadcasting point. The protocol adopts adaptive broadcasting as the way of sending invalidation reports, which shows stable performance by choosing appropriate broadcasting strategy between synchronous and asynchronous broadcastings.