THE NATURE OF A CORPORATE DATA MODEL
In Chapter 2, we saw the development of a conceptual data model that recorded the information requirements of a specific business area to inform the development of the database that is at the heart of an information system to support that business area and only that business area. This information system, like most information systems, supports a limited set of users carrying out a limited set of business processes. We also saw how the technique of relational data analysis could be used to complement that model. However that conceptual data model is developed, it is restricted to that subset of the total information requirements of the enterprise that is required to support the current business processes ...
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