It is a stereotype ?«stakeholder?» of the UML element actor (Figure 5.14).
Section 2.2.1 is fully dedicated to stakeholders. Pragmatically, they are documented
in a word processor, for example. You can use the ?«stakeholder?» stereotype
if you want to explicitly add stakeholders to your model. Though this means
that you will initially have more work, compared to documenting them in a word
processor, you will then have a possibility to use the trace relationship to relate
the stakeholders with other model elements, such as requirements ( Figure 5.15 ).
282 CHAPTER 5 Systems Engineering Profi le ??”SYSMOD
5.9 Systems and Subsystems
We introduced the system element in Section 2.3.1.
bdd [package] SYSMOD profile [system and subsystem]
?«stereotype?»
OMGSysML::Block
?«stereotype?»
Subsystem
?«stereotype?»
System
FIGURE 5-16
The stereotype for subsystems.
Defi nition
A subsystem is a system block that, in turn, represents an independent system.
This is often the case in large system (System of Systems, SoS). For example,
our on-board computer in Chapter 2 includes the subsystems radio and navigation.
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