"Which of these things are not like the others?" It's the question that drives us mad.

OK, I don't make a very good Morpheous, but the use of Super-type/Subtype hierarchies can improve the information content of your information models, and provide insight for object models in your projects.

This tutorial video covers the concepts of Generalization and Specialization in data modeling, and includes a demonstration of how to model subtypes in Visio 2010.

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