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5.11 System Processes
Defi nition
A system context element is a virtual wrapper around the entire system and
its actors.
It is a stereotype ?«systemContext?» as a specialization of the SysML stereotype
?«block?» (Figure 5.17).
5.10 System Context Elements
SysML itself offers only very few modeling possibilities to describe the environment
of a system in more detail. The system context element creates a virtual
wrapper, so that the actors are no longer outside the modeling context, but put in
relation to the context element within. This supports a more detailed view of the
internal block diagram.
Apart from the general stereotype representation, the system context element
has no notation of its own. It is normally not represented in a diagram.
We introduced the system context element in Section 2.3.2 in our approach.
5.11 System Processes
Defi nition
A system process describes a fl ow across use cases. It consists of a set of use
cases that have a domain-logical sequence.
It is a stereotype ?«systemProcess?» of the UML elements use case and activity
(Figure 5.


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