分布式数据库直接连接查询优化算法的研究

Study on Optimized Algorithm for Distributed Database Direct-join Query

在分布式数据库查询处理中,连接操作是最常用的、费时的且代价较高的一种操作,也是影响查询效率的关键因素。本文利用数据分片和并行处理策略,提出一种采用直接连接的查询优化算法,能有效地缩减查询处理的响应时间。

For distribute database query, join operation is the kind of the most common use with time consuming and higher price and also it is the key confluence factor of the query efficiency. This paper presents an optimized query algorithm, which adopts direct -join using data partition and parallel processing. It can reduce the response time of query process.