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Preparing an adequate data model

Assignment:

"Preparing an Adequate Data Model"

Using specialization hierarchies can provide an efficient application development structure. Justify the use of surrogate primary keys for a database design. Provide an example to support your response.
Historical data can be important to measuring performance. Prepare an example on how time-variant data can be properly captured and maintained within a database system.

Your answer must be, typed, double-spaced, Times New Roman font (size 12), one-inch margins on all sides, APA format.

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