摘要
演绎数据库查询具有不同于关系数据库查询的特点,因而对底层数据库的实现也提出了更高的要求,本文结合一个演绎数据库原型系统DDS,分析了演绎数据库系统的一些底层实现技术,所介绍的实现技术能很好地支持演绎数据库查询,从而有利于提高整个系统的效率。
There are differences between deductive database queries and relational database queries,and the deductive detabase queries require the supported database to do more than the relational ones.In this paper, the features of deductive dstabase queries which are different from those of relationalones are analyzed, and the techniques in implementating the supported database in our deductivedatabase prototype system DDS are discussed.
出处
《东南大学学报(自然科学版)》
EI
CAS
CSCD
1995年第3期102-106,共5页
Journal of Southeast University:Natural Science Edition
基金
国防科工委八五项目资助。
关键词
逻辑系统
演绎数据库
底层数据库
查询
optimization
relational database
logic systems /deductive database
large join