Chapter 8 Category Five: Abstraction How well does the model leverage generic structures?

The “Abstraction” category confirms a proper balance on the model between flexibility and usability. One of the most powerful tools a data modeler has at their disposal is abstraction, the ability to increase the types of information a design can accommodate using generic concepts. Going from concepts such as Customer and Employee to Person and Person Role, for example, increases flexibility but also reduces the use of the data model as a communication tool.

I visualize the abstraction setting as a volume control, where the greater the volume, ...

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