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Design Model

The design model is an object model that describes the physical realization of use cases by focusing on how functional and nonfunctional requirements, together with other constraints related to the implementation environemnt, impact the system.

The design model also has the following functions/attributes:


  • is an abstraction of system implementation
  • defines a hierarchy of design subsystems
  • represented by a design system that denotes the top-level subsystem of the model.
  • in the design model, use cases are realized by design clases and their objects and represented by collaborations within the design model.