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An Equation with Four Variables

The title of this guidebook implies that there are only two disciplines to learn:

  • Model Based Systems Engineering (MBSE) and
  • The Systems Modeling Language (SysML)

However, there are four aspects to be considered when taking on this approach. This is like an equation with four unknowns, each of which must be addressed before a team can be successful with an MBSE project or initiative. The variables in the equations are:

  • The engineering method or process
  • The discipline of modeling
  • The Systems Modeling Language (SysML)
  • Enterprise Architect, the modeling tool of choice

It is not imperative that these four aspects be mastered straight away, but it is important that they are known and worked on and that the team develops the skills to understand them individually and how they relate to each other. For example, how to create a SysML Requirements diagram using Enterprise Architect and what properties should be included, when should it be done and what other parts of the model should it be related to.

                          MBSE Approach = Process + Language + Modeling + Tool

The guidebook will address all of these concerns, and by the end the reader will not be confronted with unknown variables, but the equation will have values based on the learning, thus solving the equation with the four variables that we started with.  At this point the reader will be well on their way towards a sound engineering modeling practice.