Discussion
• 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.
The response should include a reference list. Double-space, using Times New Roman 12 pnt font, one-inch margins, and APA style of writing and citations.