I am new to uml/sysml and want to understand clearly the usage of refine vs. satisfy in a requirements diagram.
I am intending to create a requirements diagrams that are mapped to functions in an activity diagram to the appropriate functional requirement.
From reading several books, the definition of a refine relationship is as follows:
The refine requirement relationship can be used to describe how a model element, or set of elements, can be used to further refine a requirement. For example, a use case or activity diagram may be used to refine a text-based functional requirement
And the definition of a satisfy relationship is:
The satisfy relationship describes how a design or implementation model concept satisfies one or more requirements
So if have a function in an activity diagram, would you use a refine or a satisfy relationship to map to a requirement?
See Example image showing the mapping of a function to a requirement
Thank you for your inputs and help!
In an activity diagram you cannot have a function directly, just actions. You should use an operation call action in the activity diagram which can refer the function.
The function should be a part of the design so I think you should use satisfy.
