HAO Zhongxiao, FU Chuang, LIU Guohua. Decompositions for Relational Schema Based on Hypergraph Into BCNF With Lossless JoinsJ. Journal of Computer Research and Development, 1991, 28(8): 60-66.
Citation:
HAO Zhongxiao, FU Chuang, LIU Guohua. Decompositions for Relational Schema Based on Hypergraph Into BCNF With Lossless JoinsJ. Journal of Computer Research and Development, 1991, 28(8): 60-66.
HAO Zhongxiao, FU Chuang, LIU Guohua. Decompositions for Relational Schema Based on Hypergraph Into BCNF With Lossless JoinsJ. Journal of Computer Research and Development, 1991, 28(8): 60-66.
Citation:
HAO Zhongxiao, FU Chuang, LIU Guohua. Decompositions for Relational Schema Based on Hypergraph Into BCNF With Lossless JoinsJ. Journal of Computer Research and Development, 1991, 28(8): 60-66.
Decompositions for Relational Schema Based on Hypergraph Into BCNF With Lossless Joins
In this paper,some new concepts such as determinant,complementary relationship, absolute in-degree and the theory concerned are discussed and proposed.Decision and decomposition algorithms for decompositing relational schema based on hypergraph to subschema set belonging to BCNF with lossless joins are discussed in detail.
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