数据库中相关子查询的实现初探  

Implementation of Correlated Sub-query in the Database

作　　者：李春艳[1] 高伟[1] 

机构地区：[1]唐山师范学院计算机科学系,河北唐山063000

出　　处：《唐山师范学院学报》2009年第2期105-106,共2页Journal of Tangshan Normal University

摘　　要：在使用关系数据库时,用户需要的数据经常散步在多个表中,可以使用相关子查询获得所需数据。说明了相关子查询的一种执行过程。给带蕴涵语义查询功能的实现和执行提供了一些参考。The data we needed is always scattered in several tables when using relational database and we had better access to data with correlated sub-query. It needs repeated the execution between inner query and outer query. A kind of process is stated in the essay for correlated sub-query and a consultation is provided.

关 键 词：相关子查询 实现 执行 

分 类 号：TP311.13[自动化与计算机技术—计算机软件与理论]