Research of Subset Dependency （NSD） Under Null Value Circumstances

Research of Subset Dependency （NSD） Under Null Value CircumstancesJ. Journal of Computer Research and Development, 1994, 31(8).

Citation:

Research of Subset Dependency （NSD） Under Null Value CircumstancesJ. Journal of Computer Research and Development, 1994, 31(8).

Citation:

Research of Subset Dependency （NSD） Under Null Value CircumstancesJ. Journal of Computer Research and Development, 1994, 31(8).

Abstract

In this paper, the concept for subset dependency under null value circumstsnces （strog or weak holding） is given. The existential conditions of reflectivity and transitivity under strong or weak holding are discussed. It is proved by graph algorithm that they are complete to NSD strong holding.

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