Association vs. Aggregation [duplicate]

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There are four kinds of Class relationships

  1. Association: uses a
    Ex:a Class Man uses a Class Pen ( Pen is still there when man die )
  2. Aggregation: has a
    Ex:a Class Man has a Class Car ( Car is
    still there when Man die )
  3. Composition: owns a
    Ex:a Class Man owns a Class Heart ( When Man
    die, Heart die )
  4. Inheritance: is a
    Ex:a Class Man is a Class Human ( Man is a Human )

A relationship between classes of objects

Inheritance>Composition>Aggregation>Association

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