| 分布式数据库系统的查询优化策略 |
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| 引用本文： | 王书爱.分布式数据库系统的查询优化策略[J].宁波职业技术学院学报,2008,12(2):57-60. |
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| 作者姓名： | 王书爱 |
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| 作者单位： | 荆楚理工学院,湖北,荆门,448000;武汉理工大学,武汉,430070 |
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| 摘 要： | 简要地介绍了分布式数据库系统的概念和特点,并在分析比较分布式数据库系统和集中式数据库系统查询优化目标不同特点的基础上,归纳出分布式数据库系统的查询优化目标和代价分析,进而提出查询优化的策略,并在举例中重点讨论了操作执行顺序的不同对查询性能的影响。
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| 关 键 词： | 分布式数据库 查询优化 查询处理策略 |
| 文章编号： | 1671-2153(2008)02-0057-03 |
| 修稿时间： | 2008年1月24日 |
Query optimization tactics in distributed database system |
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| WANG Shu-ai.Query optimization tactics in distributed database system[J].Journal of Ningbo Polytechnic,2008,12(2):57-60. |
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| Authors: | WANG Shu-ai |
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| Institution: | WANG Shu-ai (1. Jingehu University of Technology,Jingmen 448000, China ; 2. Wuhan University of Technology,Wuhan 430070,China) |
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| Abstract: | This paper introduced simply the concept and characteristic of distributed database system. When adding distributed data into the database system, the distributed query process is very difficult and complicated,and the cost of query process is different due to different query process tactics.Query optimization in distributed system is more important and it has more notable effect. This article discusses the purposes and tactics,and presents how the different order affects the performance. |
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| Keywords: | distributed database query optimization query process tactic |
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