半联接查询优化在分布式数据库系统中的应用  

Application of Semi-join Operation Inquiry Optimized in Distributed Data Base System

作　　者：谢文阁[1] 姜悦岭[1] 

机构地区：[1]辽宁工学院计算机科学与工程学院,辽宁锦州121001

出　　处：《辽宁工学院学报》2006年第4期237-238,242,共3页Journal of Liaoning Institute of Technology(Natural Science Edition)

基　　金：辽宁工学院教师科研启动基金项目

摘　　要：分析了分布式数据库系统中联接分布关系的半联接优化原理和半联接的一般实现方法,改进和扩充了新的半联接运算的实现策略,详细地分析了它们的开销,改进后的算法可以有效地缩减查询处理的响应时间。The principles on the optimization of semi-join operation, and the algorithms of semi-join program were analyzed for this distributed data base system. The implementation strategy of semi-join computation was improved and enriched with a new one, and their expense and profit were analyzed in detail. The algorithms having been improved can reduce the response time during the query process.

关 键 词：分布式数据库 半联接操作 优化 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]