The UML elements left out in SysML are
still present in the modeling tool and can be used as usual. However, you should
be aware of the fact that your model is then neither an UML model nor a SysML
model, but a mixed form. This means that you will depend on tools that support
such mixed forms. That ??™ s no standard.
We can distinguish both between model and diagram and between structure
and behavior. The area of the elements to which neither structure nor behavior
can be allocated is much larger in SysML than it is in UML, and it includes one of
the new diagram forms: the requirement diagram ( Figure 4.2 ).
The extension mechanism of UML (profi les, stereotypes) is also part of SysML.
This means that you can defi ne new vocabulary on the basis of existing elements
to adapt the language to your needs (see also Chapter 5).
You can see various SysML diagram types in Figure 4.3 . The diagrams that are
new to SysML, compared to UML, and UML diagrams that were changed in SysML
are highlighted. All diagram types not highlighted in the fi gure were added to
SysML from UML in unchanged form.
Pages:
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426