节点文献
关系模式分解合成法的进一步研究
The Syntheses of the Decomposition of Relational Schema: A Further Study
【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。
【Abstract】 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.
【关键词】 关系模式;
合成法;
保持函数依赖;
无损连接;
【Key words】 relational schema; syntheses; preservation of FDs; lossless join.;
【Key words】 relational schema; syntheses; preservation of FDs; lossless join.;
- 【文献出处】 计算机研究与发展 ,Journal of Computer Research and Development , 编辑部邮箱 ,1992年08期
- 【被引频次】1
- 【下载频次】38