Chapter 10, Problem 1MC

When one object is a specialized version of another object, there is an_________ between them.

1. a. “is a” relationship
2. b. innate association
3. c. inherent union
4. d. unbreakable union

Program Description Answer

In C#, if one object is a specialized type of another object, then there should be an “is a” relationship between those objects.

Hence, the correct answer is option “A”.

Explanation of Solution

“is a” relationship:

In C#, if one object is a specialized type of another object, then there should be an “is a” relationship between those objects. This is used to create the “is a” relationship among several classes.

For example:

• • A truck is a vehicle.
• • A circle is a shape.

Form the above example,

• • The first statement implies that the vehicle is a “base class” and truck is the “derived class”.
  • ○ The “vehicle” is the parent of the “truck” in inheritance tree.
• • Similarly, second statement implies that the shape is a “base class” and “circle” is the “derived class”.
  • ○ The “shape” is the parent of the “circle” in inheritance tree.

Explanation for incorrect options:

Innate association:

The innate association is not a “is a” relationship among those objects.

Hence, the option “B” is wrong.

Inherent union:

The inherent union is not a “is a” relationship among those objects.

Hence, the option “C” is wrong.

Unbreakable union:

The unbreakable union is not a “is a” relationship among those objects.

Hence, the option “D” is wrong.