What is aggregation? How is it related to composition? Explain role of abstract class design with the help of example. in system

Aggregation is a type of association in Object Oriented Analysis and Design (OOAD) that represents a "has-a" relationship between two classes, where one class contains a reference to another class but does not own it completely. It implies a whole-part relationship where the part can exist independently of the whole. In other words, aggregation models relationships where the lifetime of the part is not managed by the whole. For instance, consider a “Department” class and a “Professor” class. A department may consist of several professors, but even if the department is deleted, the professors can still exist independently. This loose coupling between classes allows for better modularity and flexibility in system design.

Composition, on the other hand, is a stronger form of aggregation. It also defines a whole-part relationship _________ _______ ________ __________ ______ ____ _______ __________ _____ _____ _________.
__________ _____ _________ ______ _______ _________ _______ ______ ________.
_________ ___ ______ ____ _______ ___ _________ _____.
________ ______ __________ ____ _______ _______ ___.
_________ _____ ____ _______ ________ _____.
____ __________ ______ ___ __________ _________ ________ ____ _____ ______.
__________ _________ _______ ___ ____ ______.
_______ _________ _________ _____ ________ __________ ________ ______ ______.
__________ ____ __________ ______ __________ _____ __________ ___.
________ ___ ________ _________ ____ _________ ___.
__________ __________ _____ ___ ____ _______ _____ ______ ___ _________.
____ _______ ____ ____ _______.
_________ ______ ______ _______ ___ _____.
_______ _______ ______ ____ ____ _________ __________ _____ _____ _____ __________ _____.
____ ___ ________ ______ ______.
______ _______ ______ ______ ______ _____ __________ _________.
________ ______ ______ ____ ________ _______.
_______ _________ ________ _______ _______.
______ __________ _____ _____ _________ _______ ________ __________ _______ ________ ________ __________.
_____ _________ _______ ____ ____ _________ ______ _______.
____ ____ _____ ___ __________.
_____ _____ ____ ___ ___ ____.
___ ________ ____ _________ ____ _____ ______.
________ ______ _________ __________ _________.
______ _____ _________ ____ _____ _____ ______.
____ _____ _______ _________ ____ _____ ____ _________ _______.
___ ______ _________ __________ ___ _______ _________ ________ ____ ____ _______ _______.
____ ____ ________ ______ _____ _______ __________ ____ _____ _________.
_________ _________ _____ __________ _________ ___ _________ _____ ________.
________ _______ _________ __________ ____ ______ ____ ______ _________ ____.
______ ________ ______ ____ ____ ____ ____ _____.
______ ______ ________ _____ _____ _______ ________ ____ _____.
__________ ______ __________ ____ ______ _____ ________.
_______ ___ ______ _______ _____ ________ _______ ____.
____ _________ __________ __________ __________ ____ _________ __________ ____ ____ ________.
_____ __________ ______ _________ __________ _______.
___ ____ _______ _____ ________ ___ ____ ___ _____ ____ _________.
_____ ________ ___ ______ ____ _______ ________ _____ ___ ________.
________ _______ ______ _______ _________ _____ _________ _____ ______ _____.
_____ ______ ___ ___ ______ ______.
___ _____ ____ ____ ____.
_____ __________ _____ ______ ___ ________ __________ _______.
__________ _____ _________ _______ _______ ______ __________ ___ ________ ______ _______.
____ _______ _____ _________ ___ ________.
____ ______ ___ _________ ___ ____ _________ _____.
_______ ____ __________ ___ _______ _____ ________ __________ _______ ________.
____ _________ ____ __________ _______ ______ __________ ________ _______ _______ _________.
_______ ____ ____ _______.
Get Full Answer on WhatsApp