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Composition vs Aggregation in C#
Composition
Under Composition, if the parent object is deleted, then the child object also loses its status. Composition is a special type of Aggregation and gives a part-of relationship.
For example, A Car has an engine. If the car is destroyed, the engine is destroyed as well.
public class Engine { . . . } public class Car { Engine eng = new Engine(); ....... }
Aggregation
Aggregation is a directional relation between objects in C#. It is the relationship between objects.
For example, Employee and Address
An Employee is associated with a single Department, whereas a Department can have more than one employee. Let us see an example of Employee and Address.
Example
public class Address { . . . } public class Employee { private Address addr; public Employee (Address addr) { this.addr = addr; } . . . }
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