Extensions to the Relational Data Model and Recent Directions

  • Mark Levene
  • George Loizou


So far we have covered the relational data model in detail including an extension to incorporate time into the model. In this final chapter we will briefly survey various extensions of the relational model which have been under development in recent years, and we will briefly overview some new directions that are being researched.


Relation Schema Relational Algebra Anchor Node Inductive Logic Programming Path Expression 


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Copyright information

© Springer-Verlag London 1999

Authors and Affiliations

  • Mark Levene
    • 1
  • George Loizou
    • 2
  1. 1.Department of Computer ScienceUniversity College LondonLondonUK
  2. 2.Department of Computer ScienceBirkbeck CollegeLondonUK

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