Inference rules for functional and inclusion dependencies

  • Authors:
  • John C. Mitchell

  • Affiliations:
  • Massachusetts Institute of Technology, Cambridge, MA

  • Venue:
  • PODS '83 Proceedings of the 2nd ACM SIGACT-SIGMOD symposium on Principles of database systems
  • Year:
  • 1983

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Abstract

A set Σ of functional dependencies and inclusion dependencies implies a single dependency σ if all databases (finite and infinite) which satisfy Σ also satisfy σ. This paper presents complete inference rules for deducing implications of inclusion and functional dependencies. The results of [5] suggest that the implication problem for functional and inclusion dependencies together has no simple axiomatization satisfying a natural set of conditions. Out of necessity, the inference rules presented here do not satisfy the conditions assumed in [5].