摘要
论述了含空值关系数据库中的多值逻辑推导及演化过程。
This article discourses the Relational model of datebases'multivalued logical inference which includes the Null Values.Furthermore,a new kind of inference rules base on three values logical inference is built up,and the adhibition of multivalued logic is also be talked in this article.
出处
《计算机工程与应用》
CSCD
北大核心
2001年第8期97-98,共2页
Computer Engineering and Applications
基金
国家民委科研基金!(编号:982002)
中南民族学院自然科研基金!(编号:980108)
