摘要
本文首先提出了一种属性具有加权模糊值的模糊关系数据库模型,引入了语义距离及模糊视图的概念.语义距离为描述模糊查询条件提供了手段.模糊视图为多用户共享模糊数据库和数据保护提供了基础.文章指出了它们的一些应用,特别是在由复杂对象构成的库中检索类似对象的应用,例如建筑设计及案件侦破等.本文提出了工程设计数据库的思想.
A fuzzy relational database model with weighted fuzzy attribute values is presented and the concepts of semantic distance and fuzzy users' view are introduced. Semantic distance makes retrieval of similar objects in the database possible. Fuzzy users' view provides multi-users with an approach to share and protect data in the database. Some applications about complex retrieval are given and databases for engineering design are suggested.
出处
《计算机学报》
EI
CSCD
北大核心
1989年第10期757-764,共8页
Chinese Journal of Computers
