朱扬勇. Smith依赖图的改进[J]. Journal of Xinjiang University (Natural Science Edition in Chinese and English), 1990, (3).DOI:
Smith依赖图的改进
摘要
本文分析了 Smith 提出的关于关系数据库设计的依赖图方法
证明了此方法可以使关系模式的规范化程度达到3NF
但不能达到■并在仅考虑函数依赖的情况下提出了改进规则
使其达到了 BCNF.
Abstract
In [1]
Henry C Smith gives a method for relational database design by a dependency diagram.This paper gives a proof that the method can compose the relational scheme into 3NF
but not into BCNF
and improves the method so that it can compose into BCNF.