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Data and Reality: A Timeless Perspective on Perceiving and Managing Information in Our Imprecise World, 3rd Edition by William Kent

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Chapter 4. Relationships

Relationships are the stuff of which information is made. Just about everything in the information system looks like a relationship.

A relationship is an association among several things, with that association having a particular significance. For brevity, I will refer to the significance of an association as its "reason." There is an association between you and your car, for the reason that you own it. There's an association between a teacher and a class, because he teaches it. There's an association between a part and a warehouse, because the part is stored there.

Relationships can be named, and for now we will treat the name as being a statement of the reason for the association. As usual, we have to be careful to avoid ...

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