MultiValue / Post-relational / 4NF databases

It would seem that there isn’t total agreement as to how exactly the MultiValue database model fits into the generally accepted nomenclature and mathematical definitions of the various “Normal Forms” of databases. Other terms that are sometimes used in connection with it are “post-relational”, “nested-relational”, “multidimensional”, “object-relational”, and “4NF (fourth normal form)”. The first three seem to be marketing rather than strictly mathematical terms and so, until such time as this issue is resolved, any of these terms might be used throughout this site as alternative terminology for the MultiValue Database, and any corrections regarding this will be gratefully accepted.

Here are some links to web sites that deal with databases and database concepts that might be of interest, (if not, in some cases, altogether illuminating):

  • Extended Relational Database Technology¬†(Ardent Software, Inc.)
  • The Evolution Of Data Models And Approaches To Persistence In Database Systems
  • A Very Brief History of Computer Science
  • The Birth of the Relational Model – Part 1 of 3
  • The Birth of the Relational Model – Part 2 of 3
  • The Birth of the Relational Model – Part 3 of 3
  • Normal forms – relational databases
  • What is Normalization?
  • The practical need for fourth normal form
  • Information Management Partners – Structured Query Language
  • A Well Designed Relational Database
  • List of publications from the DBLP Bibliography Server
  • Normalization – PC Webopaedia Definition and Links
  • 5 Rules of Data Normalization
  • A Synthetic Method for Normalizing Relational Databases
  • Object Oriented Databases
  • What is “Relational”?

Any contributions to this page explaining how the MultiValue database fits into the generally accepted database terms and nomenclature are most welcome.