Association and aggregation

Aggregation is “a part of” relationship . Example: A student object is a part of College object. Inheritance is a “is a “relationship where one or more classes are derived from a base class.

Aggregation is “a part of” relationship . Example: A student object is a part of College object. Inheritance is a “is a “relationship where one or more classes are derived from a base class.

Association: Association represents a relationship between two or more objects where all objects have their own life cycle and there is no owner . Association is based on HAS-A Relationship. This is represented by a solid line.

Association: Association represents a relationship between two or more objects where all objects have their own life cycle and there is no owner . Association is based on HAS-A Relationship. This is represented by a solid line.

In Short, a relationship between two objects is referred to as an association, and an association is known as composition when one object owns another while an association is known as aggregation when one object uses another object.16 Eyl 2021

In Short, a relationship between two objects is referred to as an association, and an association is known as composition when one object owns another while an association is known as aggregation when one object uses another object.16 Eyl 2021

Yes, a comic book is a kind of book so inheritance makes sense. If it doesn’t make sense use association or the has-a relationship instead. Only use inheritance when the child class is really a type of the parent class, otherwise use association .