The Determining Method about the Conflict between the Null Constraints and the Set of Functional Dependencies

Weiyi Liu

The Determining Method about the Conflict between the Null Constraints and the Set of Functional Dependencies

1989

Weiyi Liu

In this paper the conflict between the null constraints and the set of functional dependencies is defined.Some rules for determining the conflicts and a method for processing the conflicts are obtained.

Keywords:

Mathematical optimization
Dependency theory (database theory)
Functional dependency
Mathematics
Discrete mathematics

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