摘要
本文通过实例的引用，描述多用户关系数据库管理系统ＫＤ＿Ｂａｓｅ中ＳＱＬ嵌套查询的优化实现技术，并给出从ＫＤ＿ＳＱＬ基本查询到关系代数查询的优化转换方法。
By using a specific example, this paper describes an optimized implementation of nested SQL queries in KD _Base, which is a kind of Multi-user Relational Database Management System, and presents converting methods how to translate SQL queries into the relational algebra queries.
出处
《小型微型计算机系统》
EI
CSCD
北大核心
1997年第8期43-48,共6页
Journal of Chinese Computer Systems
