Question: 1. What is an entity supertype, and why is it used? [3] 2. What kinds of data would you store in an entity subtype? [1]

1. What is an entity supertype, and why is it used?

1. What is an entity supertype, and why is it used? [3] 2. What kinds of data would you store in an entity subtype? [1] 3. The FlyRight Aircraft Maintenance (FRAM) division of the FlyRight Company (FRC) performs all maintenance for FRC's aircraft. Produce a data model segment that reflects the following business rules: All mechanics are FRC employees. Not all employees are mechanics. Some mechanics are specialized in engine (EN) maintenance. Some mechanics are specialized in airframe (AF) maintenance. Some mechanics are specialized in avionics (AV) maintenance. (Avionics are the electronic components of an aircraft that are used in communication and navigation.) All mechanics take periodic refresher courses to stay current in their areas of expertise. FRC tracks all course taken by each mechanic-date, course type, certification (Y/N), and performance. Given the requirements above, create the Crow's Foot ERD segment [16]

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