The improved semi-join query strategy optimizes the join scheme,reduces the cost of data transmission,shortens the response time of query processing and raises the efficiency of query.
改进后的半连接查询策略优化了连接方案,降低了数据传输过程的成本,缩短了查询处理的响应时间,提高了查询操作的效率。
参考来源 - 半连接查询优化算法的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
The method of distributed query optimization is analyzed deeply which use semi-join algorithm and query tree disassembling.
并用实例证明其相对于没有进行分布式查询优化的算法可以大大减少网络上传输的数据量。
The query processing in the distributed database systems is comprehensively summarized. This paper shows that using HASHING method for thereduction of semi-join communication cost is beneficial.
本文较全面地总结了分布式数据库系统的查询处理，并提出用HASHING 方法减少半连接通讯的开销是有利的。
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