An information item is denoted with a rectangle, like a class. In addition, there
is a black triangle in the upper right corner ( Figure 3.89 ). No additional information
can be stated, such as attributes and operations with classes.
219
FIGURE 3-88
Example for using a profi le.
pkg Using a profile On-board computer
On-board computer
?«profile?»
SYSMOD
?«apply?»
Information structures are modeled using representation relationships. The
notation is a dashed arrow with the keyword ?«representation?» . Figure 3.89 shows
that the route represents a destination and the type of route (fast, short, country
road, and so on). Multiplicities are not permitted for this relationship.
In addition to information structures, you can also use the representation relationship
to connect an abstract information element with a concrete design element
from the model. For example, the design class Waypoint in Figure 3.89 is
represented by the information item destination on an abstract level.
Information items fl ow through the system in the sense that they get from one
element to another element.
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