数据库查询优化的分析
首发时间:2008-09-17
摘要:数据库应用系统的性能受多方面的限制,如操作系统、数据库管理系统(DBMS)以及前端开发工具等。从大多数数据库应用系统的实例来看,查询操作在各种数据操作中占的比重最大,查询的效率是数据库系统的重要指标,高效的查询能极大的提高系统的性能。本文从数据库用户和数据库管理系统两个角度阐述了查询优化的策略。
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Analysis of the database query optimization
Abstract:Performances of database application system are limited by various restrictions, such as operating systems, database management system (DBMS) and front-end development tools and so on. Based on the database applications from most of the examples, enquiries operation accounted for the largest proportion of the various date operations. The efficiency of the database system is an important indicator of the efficiency of the enquiries, which can greatly affect system performance. This article descripts the strategies of query optimization from the two perspectives of database users and database management system.
Keywords: database system query optimization database user database management system
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