摘要
本文对关系模式分解的合成法进行了较为深入的研究。提出了用合成法把关系模式转化为BCNF,4NF,5NF,并且“保持函数依赖”和具有“无损联结性”分解的条件。
In this paper, the syntheses of the decomposition of relational schema is studied more deeply. The condition that relational schema is enanged into BCNF, 4NF, 5NF by the syntheses, and has 'the preservation of FDs' and 'lossless join' is mentioned.
出处
《计算机研究与发展》
EI
CSCD
北大核心
1992年第8期60-62,35,共4页
Journal of Computer Research and Development
关键词
关系模式
数据库
relational schema, syntheses, preservation of FDs, lossless join.
