Question

A
Joey has developed an application for a vehicle management company.
This application has three dasses. Vehicles. Cars, and Trucks, where
the Cars and Trucks classes extend the Vehicles class, Joey has
created a single toble for all these danses instead of creating a
separate table for each dess in the inheritance hierarchy. Which one of
the following mapping stratepes has been implemented by Joey in the
application to support the inhentance hierarchy?
A​

Answer 1

Answer:

Explanation:

These two schools have eight teachers each and will share the services of one librarian. Five of the qualifying schools are union schools and have both.