bcnfprimary-key3nfdecomposition-algorithmcandidate-key UpdatedJun 6, 2022 Python xadityax/Database-Normalization Star0 Code Issues Pull requests Takes Database and Functional dependencies as Input and checks Normalization form and converts up to BCNF. ...
根据关系数据理论,任何一个关系模式都能转换为无损的BCNF关系模式集,但不一定能保函。为了使得转换后得到无损保函的BCNF模式集,本文引入图论中的有向图来表示函数依赖关系,并将有向图结合运用到关系模式的规范化过程中,使得模式分解能得到无损保函的BCNF模式集,从而达到改进传统的BCNF分解算法,优化分解的效果。 著录项...
Research of TBCNF decomposition in partial order temporal database偏序环境下时态数据库中的TBCNF分解问题研究 This paper investigated partial-order temporal database,gave the concepts of non-strict partial-order temporal type set,partial-order temporal module schem... WAN Jing,HAO Zhongxiao,万静,......
partial-order temporal module projection and partial-order temporal BCNF etc.It also proposed the partial-order temporal BCNF decomposition algorithm which could avoid complex operations applied to temporal types.The proof for its correction,termination and the time complexity analysis were also given.It...
Here is our algorithm for splitting a non-3NF relation R into 3NF relations while not losing any FDs.Find a minimal basis for the set of R's FDs. For each FD in the minimal basis, create a relation consisting of the attributes in that FD. If none of the relations have a set of ...
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