Interested to Buy Any Domain ? << Click Here >> for more details...
Difference between Composition and Aggregation
- 2 Answers
- 23761 Views
- Protech, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / benjamin jacob
Composition : Defines a strong-coupled relationship between
two entities, where the one entity is part of another, and
both need each other for their existence. e.g. Human body
and the Heart.
Aggregation : Defines a weak-coupled relationship between
two entities, where one entity could be part of another, but
either can exist without the other, independantly. e.g.
School and teacher.
| Is This Answer Correct ? | 85 Yes | 5 No |
Answer / paul howard
Composition can be used to model by-value aggregation which
is semantically equivalent to an attribute. In fact
composition was originally called aggregation-by-value in an
earlier UML draft with “normal” aggregation being thought of
as aggregation-by-reference. The definitions have changed
slightly but the general ideas still apply. The distinction
between aggregation and composition is more of a design
concept and is not usually relevant during analysis.
| Is This Answer Correct ? | 14 Yes | 5 No |
What is a final variable?
Difference between abstraction and implementation hiding ?
Write a program to show the inheritance used in a class.
What is static polymorphism?
Why is message passing between the objects important?
What is Abstract method and how different from Virtual Method?
Difference: Object Oriented Analysis (OOA) and Object Oriented Design (OOD)?
Can we reduce the visibility of the inherited or overridden method ?
Is class an Object? Is object a class?
What are the features of encapsulation ?
What interface must an object implement before it can be written to a stream as an object?
Can we override static methods? Why?
Design Patterns 
