基于SDD-1算法的分布式数据库查询优化策略的研究

The Distributed Database Query Optimization Strategy Research on SDD-1 Algorithm

分布式数据库系统由于数据的分布和冗余使得分布式查询处理增加了许多新的内容和复杂性，因此分布式查询处理的策略显得尤为重要。本文介绍了基于SDD-1算法的查询策略的特点，并提出存在的问题及改进方法。

Distributed database system has dealt with and increase a lot of new content and complexity because of distribution and redundancy for data distributed to inquire, so the query strategy seems particularly important.This text introduced the characteristics of query strategy which based on the SDD-1 algorithm and discuss the defeat and improving methods.