A Further Study of Strong Hold Conditions of Multivalued Dependencies With Null Values

A Further Study of Strong Hold Conditions of Multivalued Dependencies With Null ValuesJ. Journal of Computer Research and Development, 1994, 31(6).

Citation:

A Further Study of Strong Hold Conditions of Multivalued Dependencies With Null ValuesJ. Journal of Computer Research and Development, 1994, 31(6).

Citation:

A Further Study of Strong Hold Conditions of Multivalued Dependencies With Null ValuesJ. Journal of Computer Research and Development, 1994, 31(6).

Abstract

In this paper, strong hold condition of multivalue dependencies with null value is discussed deeply, and the corresponding concepts in literature 1 and 2 are modified fundamentally.New strong hold condition of multivalue with null value is presented, and its validity is proved.

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