Method integration

3. Concept based (Leppänen et al. 1995):

• 1. Equivalence

  • referring elements in different methods are same type
  • an entity in an enterprise-wide datamodel is also an entity in a logical structure of a data base (cf. vertical consistency), or an instance of class (object) in class diagram is also an object in an object diagram.

• 2. Polymorphism

  • an element in one method is related to some other element (of different type) in another method (correspondence, subset, intersection)
  • a flow (or data store) in a DFD diagram can refer to an entity in an ER diagram.

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