NIELIT 2021 Dec Scientist B - Section B: 63

Question

In Software Modeling $\text{‘IS A’}$ represents ______________ relationship.

• A. Aggregation 
• B. Over loading 
• C. Inheritance 
• D. Design Patterns

Comments

IS A – represents inheritance and HAS A – represents composition/aggregation.

Reference : https://www.w3resource.com/java-tutorial/inheritance-composition-relationship.php#:~:text=IS%2DA%20Relationship%3A,Car%20is%20a%20Vehicle%20etc.

Answer 1

Ans C.(Inheritance)

IS-A Relationship:

In object-oriented programming, the concept of IS-A is a totally based on Inheritance, which can be of two types Class Inheritance or Interface Inheritance. It is just like saying "A is a B type of thing". For example, Apple is a Fruit, Car is a Vehicle etc. Inheritance is uni-directional. For example, House is a Building. But Building is not a House.