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CIS/515 CIS515 CIS 515 Week 3 Discussion 2

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CIS 515 Week 3 Discussion 2 Week 3 Discussion 2 • 5 “Preparing an Adequate Data Model” Please respond to the following: • 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.

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