Difference between Association and Aggregation

Prerequisite – Association, Composition and Aggregation in Java

Association:
An association is defined as an organization of people with a common purpose and having a formal structure. It represents a binary relationship between two objects that describes an activity. It is a relationship between objects. For example, A doctor can be associated with multiple patients.





Aggregation:
An aggregation is a collection, or the gathering of things together. This relationship is represented by a “has a” relationship. In other words, aggregation is a group, body, or mass composed of many distinct parts or individuals For example, phone number list is an example of aggregation.





Difference between Aggregation and Association:

Aggregation Association
Aggregation describes a special type of an association which specifies a whole and part relationship. Association is a relationship between two classes where one class use another.
It in flexibile in nature It is inflexible in nature
Special kind of association where there is whole-part relation between two objects It means there is almost always a link between objects
It is represented by a “has a”+ “whole-part” relationship It is represented by a “has a” relationship
Diamond shape structure is used next to the assembly class. Line segment is used between the components or the class



My Personal Notes arrow_drop_up

Small things always make you to think big

If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.