Machine-translated by Google. Questions are authored in English.
Top

Discussion

Inheritance is which of the following?

  • A.When a supertype entity inherits values of the subtype attribute
  • B.When a subtype entity inherits values of the supertype attribute
  • C.When a supertype entity inherits values of another supertype attribute
  • D.When a subtype entity inherits values of another subtype attribute

Answer: B

Correct answer: When a subtype entity inherits values of the supertype attribute

Inheritance runs downward. Attributes common to every subtype are held once at the supertype and are inherited by each subtype instance, so an instance of the subtype carries both the general attributes and its own particular ones. The relationships of the supertype are inherited on the same terms.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.