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 has discusseel the multi-logical inference in the relational database included in the null voclues. Furthermore, a new kind of inforence rules based on three-valued logical inference are bulite up, and the application of multi-valued logic is also introduced in it.
出处
《武汉科技学院学报》
2000年第4期29-32,共4页
Journal of Wuhan Institute of Science and Technology
基金
国家民委科研基金!(编号 982 0 0 2 )
中南民族学院自然科研基金!(编号 980 10 8)资助项目
