摘要
在数据库系统中,查询优化对于提高数据库性能具有重大意义。文中通过对数据库和SQL语句的研究,分别从这两方面提出了查询优化过程中对用户查询计划的优化策略,减少了查询的计算量,提高了查询的响应速度,显著提高了数据库性能,具有较强的可操作性和实用性。
In the database system, query optimization is of great significance for improving database performance. Based on the research of the database and SQL, the optimized strategy for user query plan separately from these two aspects is proposed . It reduced the computation load, raised the speed of response, obviously enhanced the database performance and had strong feasibility and practicability.
出处
《科学技术与工程》
2007年第9期2095-2097,共3页
Science Technology and Engineering
