Question

A supertype entity Vehicle in the Division of Motor Vehicles' database has the following attributes: VIN, Make, Model, Color, VehicleType.
VIN is the identifier and joins the Vehicle entity to these entities: Car, Truck, Bus and Bike
Because Car, Truck, Bus and Bike inherent the attributes mentioned above from Vehicle, they are called ___________________.

Supertype
Subtype
Strong
Associative

Answer 1

Entities Car, Truck, Bus and Bike are called Subtype of the entity Vehicle