An efficient optimization algorithm for distributed query
Feng Zu · Ningxia Engineering Technology · 2004
Distributed query is a query process that will incur heavy communication cost. The basic challenge is to design and develop efficient query strategies and techniques to minimize this communication cost. An efficient optimization algorithm for distributed query,i.e.,WPERF+,was presented in this paper. The advantages of W semi joins and PERF joins had been combined into WPERF+,and greatly enhanced the performance of W semi joins and PERF joins. It is theoretically proved that WPERF+strategy is an efficient optimization algorithm that can greatly reduce its communication cost of distributed query.