Composition vs inheritance

The difference is typically expressed as the difference between “is a” and “has a”. Inheritance, the “is a” relationship, is summed up nicely in the Liskov Substitution Principle. Aggregation, the “has a” relationship, is just that – it shows that the aggregating object has one of the aggregated objects .6 Kas 2008

The difference is typically expressed as the difference between “is a” and “has a”. Inheritance, the “is a” relationship, is summed up nicely in the Liskov Substitution Principle. Aggregation, the “has a” relationship, is just that – it shows that the aggregating object has one of the aggregated objects .6 Kas 2008

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 .