Data dependencies over rough relational expressions | IEEE Conference Publication | IEEE Xplore

Data dependencies over rough relational expressions


Abstract:

Functional dependencies, including weighted ones, are formulated in the same manner as other constraints in a relational database based on rough sets. A tuple that belong...Show More

Abstract:

Functional dependencies, including weighted ones, are formulated in the same manner as other constraints in a relational database based on rough sets. A tuple that belongs to a relation is accompanied by a supplementary attribute value. When a functional dependency is imposed on a relation, a compatibility degree with the functional dependency is calculated for every tuple. Whether the tuple satisfies the functional dependency is determined by comparing the compatibility degree with a supplementary attribute value. Different inference rules from the conventional ones are obtained in augmentation for functional dependencies.
Date of Conference: 02-05 December 2001
Date Added to IEEE Xplore: 07 August 2002
Print ISBN:0-7803-7293-X
Conference Location: Melbourne, VIC, Australia

References

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