Difference between aggregation and composition

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.

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 .