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c#.netaggregationcompositionclass-relationship

Employee and EmployeeInfo - C# relationship

I have two classes.

Employee (Model)

EmployeeInfo (Another Class)
//Employee GetEmployeeInfo(int empCode) (MethodName)

EmployeeInfo class returns a Employee type.

Now, what is the relationship between Employee and EmployeeInfo ? (Aggregation, Composition or Association ?)

My guess is that, a new instance of Employee is created within the EmployeeInfo. So, when EmployeeInfo class object dies, so does Employee . This signifies a death relationship. So, the relationship is Composition ?

Sorry if this is a naive question, but cant get it right.

Solution

  • If a particular EmployeeInfo is created with and dies with a specific Employee then it's Composition.

    If a particular EmployeeInfo can have a specific Employee, but can exist without it then it's Aggregation.

    Both Composition and Aggregation are types of Associations, they are just specialized associations.

    Yes I would say the relationship you are describing would be composition.