摘要： 本文基于一个模糊关系数据库系统的实验性原型FRDB1中定义的模糊关系.首先定义了模糊等价性,然后描述并验证了模糊依赖的理论,最后讨论了模糊关系的规范化设计.

关键词: 模糊关系, 模糊函数依赖, 模糊等价性, 筒形扩充, 隶属度, 基性质

Abstract: Based on fuzzy relations defined in FRDB1 system-an experimental prototype of fuzzy retational database system, the paper defines fuzzy equality, describes the theory of fuzzy functional dependency and dis-cusses normalization design of fuzzy relations.