Use-Case Realization Refinement Steps Identify each object that participates in the flow of the use case Represent each participating object in a sequence diagram Incrementally incorporate applicable architectural mechanisms Object Oriented Analysis and Design 9Object Oriented Analysis and Design 9  Identify each object that participates in the flow of the use case  Represent each participating object in a sequence diagram  Incrementally incorporate applicable architectural mechanisms Use-Case Realization Refinement Steps