ER Diagram Solutions

Cardinalities

How do you solve cardinalities such as:

  • One to many.
  • Many to many.
  • Multivalue attributes.

Here are some suggestions.

A student drawing en ER-Diagram

Two students explaining ER-Ds

Published by

Per Thykjaer Jensen

I am a Senior Lecturer in front- and backend web programming at the Multimedia Design and Communication Programme at Business Academy Aaarhus. I speak several languages: PHP, Python, MySQL, JavaScript, Nodejs, HTML, CSS, and ... Danish. Background: MA it, interaction and multimedia - MA Literature history - BA Art History.

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