Question

6. A rental car agency classifies the vehicles it rents into four categories: compact, midsize, full-size, and sport utility. The agency wants to record the following data for all vehicles: Vehicle_ID, Model, Year, and Color. There are no unique attributes for any of the four classes of vehicle. The entity type vehicle has a relationship (named Rents) with a customer entity type. None of the four vehicle classes has a unique relationship with an entity type. Would you consider creating a class/subclass relationship

Answer 1

Answer:

there are no possibilities

Explanation:

A class / subclass relatonship is not going to be possible here.

This is because we have these four caegories namely

1. compact,

2. midsize,

3. full-size, and

4. sport utility

These four categories have no real unique relationship or attributes with an entity type. A minimum of a supertype has atleast one subtype as well as following the total specialization situation.