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《Journal of Anqing Teachers College(Natural Science Edition)》 2003-02
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An Algorithm to Seek the Candidate Key of a Relation Scheme in the FD of the Left Single Attribute

QIN Zunyue (Maths & Computer science Department of Jishou University Zhangjiajie 427000 china)  
Seeking the candidate key of the relation scheme is an important procedure in normalizing relation. Although some methods on seeking it are shown by some reference materials,the concrete algorithm cannot be obtained.The paper demonstrates an algorithm by using the knowledge of the directed graph to seek the candidate key of a relation scheme.
【CateGory Index】: TP311.11
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