模糊空值环境下关系模型的冗余处理

Disposal of Redundancy in the Relational Model Under the Fuzzy Null Value Environment

本文将模糊空值环境下的关系模型扩展为扩展关系模型,并借用模糊语义距离给出基本关系模型和扩展模型上冗余信息清除的基本方法。

This paper expands the basle relational model to an expanded one under the fuzzy null value enviroment, and gives the method of how to clear the redundant information in the basic relational model and in the expanded model with the definition of fuzzy distance.