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Hiding Expressed Using Relation Algebra with Multi-Relations - Oblique Lifting and Lowering for Unbalanced Systems.

Reinder J. BrilLoe M. G. FeijsAndré GlasRené L. KrikhaarThijs Winter
Published in: CSMR (2000)
Keyphrases
  • relation algebra
  • database
  • expressive power
  • high level
  • natural language
  • low level
  • learning systems
  • formal logic