Logical Data Base Design
The purpose of a data base is to represent objects and events of interest to the organization. Any representation of the real world is, of necessity, incomplete in that it is not the actual object but a description of that object. The characteristics described are those that are most obvious, or most interesting, or most relevant to the creator of the representation. Aspects which are not of interest are ignored. For example, the descriptive characteristics of an individual that are recorded on a driver’s license include age, hair color, eye color, name, and address but not marital status or educational history.
KeywordsData Base Requirement Analysis View Integration Logical Schema Record Type
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