Association, Aggregation & Composition in Programming Technique II

Play an AI-generated podcast conversation about this lesson

What is the main difference between association and aggregation?

Association indicates one-to-one relationships, while aggregation indicates one-to-many relationships.

The existence of objects in association is independent, while in aggregation it is not. (correct)

Association is a one way relationship, while aggregation is a two-way relationship.

Aggregation models a 'has a' relationship, whereas association models an 'is a' relationship.

In the context of relationships between classes through their objects, what is a common feature of association and aggregation?

Both can have one to many, many to one, or many to many relationships. (correct)

Both can only have one-to-one relationships.

Both can only have two-way relationships.

Both are implemented by objects containing pointers to other objects.

Which statement best describes an aggregation relationship?

The existence of objects in aggregation is independent of each other.

Aggregation models an 'is a' relationship between classes.

Aggregation implies that the enclosed class has a relationship with the enclosing class. (correct)

Aggregation indicates a one-to-one relationship between classes.

How does an aggregation relationship differ from an association relationship?

Aggregation indicates a 'has a' relationship, while association indicates an 'is a' relationship. Signup and view all the answers

What type of relationship does association indicate between classes through their objects?

Is a relationship Signup and view all the answers

In the context of aggregations, what happens if a student withdraws from a course?

The pointer between the student and the course is broken, but the course still exists for other students. Signup and view all the answers

What is the purpose of using pointers in aggregation?

To represent a relationship between objects without destroying the related object. Signup and view all the answers

What distinguishes compositions from aggregations?

Compositions have a stronger ownership relationship and the part objects depend on the whole objects. Signup and view all the answers

What does it mean when it is said that 'the whole object is responsible for creation and destruction of its part(s)' in compositions?

The whole object has complete control over the creation and destruction of its part objects. Signup and view all the answers

Why is it important to use aggregations or compositions instead of directly creating new objects in certain scenarios?

To model whole/part relationships and control the existence of related objects. Signup and view all the answers

Association, Aggregation & Composition in Programming Technique II

Podcast Beta

Questions and Answers

What is the main difference between association and aggregation?

In the context of relationships between classes through their objects, what is a common feature of association and aggregation?

Which statement best describes an aggregation relationship?

How does an aggregation relationship differ from an association relationship?

What type of relationship does association indicate between classes through their objects?

In the context of aggregations, what happens if a student withdraws from a course?

What is the purpose of using pointers in aggregation?

What distinguishes compositions from aggregations?

What does it mean when it is said that 'the whole object is responsible for creation and destruction of its part(s)' in compositions?

Why is it important to use aggregations or compositions instead of directly creating new objects in certain scenarios?

More Quizzes Like This

Association Football

Association Knowledge Quiz

Association Analysis I: Basic Concepts

Java Classes: Association and Aggregation Concepts

Upgrade to continue

Association, Aggregation &amp; Composition in Programming Technique II

Podcast Beta

Questions and Answers

What is the main difference between association and aggregation?

In the context of relationships between classes through their objects, what is a common feature of association and aggregation?

Which statement best describes an aggregation relationship?

How does an aggregation relationship differ from an association relationship?

What type of relationship does association indicate between classes through their objects?

In the context of aggregations, what happens if a student withdraws from a course?

What is the purpose of using pointers in aggregation?

What distinguishes compositions from aggregations?

What does it mean when it is said that 'the whole object is responsible for creation and destruction of its part(s)' in compositions?

Why is it important to use aggregations or compositions instead of directly creating new objects in certain scenarios?

More Quizzes Like This

Association Football

Association Knowledge Quiz

Association Analysis I: Basic Concepts

Java Classes: Association and Aggregation Concepts

Association, Aggregation & Composition in Programming Technique II