(Answered) Discussion preparing an adequate data modelrespond to the

Programming

Discussion: "Preparing an Adequate Data Model"

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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