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Requirements Analysis: From Business Views to Architecture by David C. Hay

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Chapter 6. Column Three: Locations

In John Zachman's original framework there were only three columns: data, function, and location. In 1989, the elements that concerned developers were primarily data and processes, although the implications of distributed systems were significant as well, and it was clear that any requirements analysis project would have to address them. Location was easily as important as data and processes. Only later did Mr. Zachman realize that there were three other columns as well.

The problem is that location is not really another column: It is a third dimension. That is, each of the other columns has a location dimension to it. It's as though the real Architecture Framework were as shown in Figure 6.1, with “Location” ...

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