Decomposition of four component items

  • John Debenham
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 720)


Items are introduced as a universal formalism for describing data (ie individual things), information (ie relations) and knowledge (ie rules). A single rule for the normalisation of items is defined. The five normal forms for relational database together with the Boyce-Codd normal form provide a complete characterisation of the normalisation of 3-adic information items. New normal forms may be derived by applying our single rule of normalisation to n-adic items for n>3.


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Copyright information

© Springer-Verlag Berlin Heidelberg 1993

Authors and Affiliations

  • John Debenham
    • 1
    • 2
  1. 1.Key Centre for Advanced Computing SciencesUniversity of TechnologySydneyAustralia
  2. 2.CSIRO Division of Information TechnologyNorth RydeAustralia

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