System Models

• A system model is an abstract description of the system to be developed

• Particular requirements analysis methods choose a set of system models as part of the method

  • Different system models contribute in different ways to the understanding of the system (there is no ideal system model, nor is there an ideal method to develop such models !)

• Different system models are based on different approaches to abstraction (functional, data)

• Typical kinds of system models:

  • data-processing model
  • composition model
  • classification model
  • stimulus-response model

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