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Abstract
A generalised definition of fuzzy multivalued dependencies (FMVD) is introduced. It is shown that Armstrong's axioms for classical multivalued dependencies (MVD) hold in this generalised fuzzy environment as well. We found out necessary conditions for FMVDs to hold in two-tuple relations and sub-relations. This provides us a method to extend inferences from two-tuple subrelations to their parent relations. The proof procedures for the inference rules are based on these relationship.
Additional information
Notes on contributors
Tapan K Bhattacharjee
Tapan K Bhattacharjee, has an MSc in Physics from Gauhati University, Guahati, Assam and MTech in Computer Engineering from Indian Institute of Technology, Kharagpur. Currently he is working as Senior Scientific Officer at Variable Energy Cyclotron Centre, DAE, Calcutta and is responsible for the database support of the centre. His research interests are fuzzy databases, logic databases and object-oriented databases.