Question

Paperback and hardcover books are mutually exclusive subsets of books. PaperBackBook and HardCoverBook _____ the supertype entity Book.

Answer 1

PaperBackBook and HardCoverBook are subtypes of the supertype entity Book in computer science.

Step-by-step explanation:

PaperBackBook and HardCoverBook are subtypes of the supertype entity Book. In object-oriented programming, inheritance is commonly used to model such relationships. In this case, Book serves as the superclass or supertype, while PaperbackBook and HardCoverBook are the subclasses or subtypes.

By defining Book as the supertype, we can have general properties and behaviors that apply to all types of books, such as the title, author, and publication date. PaperbackBook and HardCoverBook can then have their specific properties, such as the cover type and weight.