198 Handbook of SCADA/Control Systems Security
the information contained within systems. To do this it uses a series of diagrams and
supporting text.
It can provide details of many process elds such as the following:
• Actors, examples could include a manager leading a team executing a proj-
ect and staff members on the project team
• The various processes that occur
• Relationships between actors and entities
unIfIed
In UML, unied came about due to the Object Management Group (OMG) and
Rational Software Corporation coming together to create an industry standard for
engineering practices. This was a desire to create a common language.
Model
A model is a depiction of a subject. A model is used to encapsulate a set of ideas
(called abstractions