Information Technology Reference
In-Depth Information
2.5.5.
Modeling and specification based on P@ss-ITS data
The data obtained in the previous phase built a reference source of the real needs
of users and the services that they are associated with. To fuel discussion about the
approach to integration of needs in the design of the information system, the
P@ss-
ITS
domain data were used to produce the modeling of a traveler information
system. The modeling was structured according to two axes: a static model of the
domain and a dynamic model of the activity. The whole model was then transcribed
in UML to obtain a representation that can be interpreted for the implementation.
The static model was structured around the generic diagram of information flow
(Figure 2.3), which constitutes a
package
model according to the UML norm. This
structure was then developed within a class diagram with the help of inheritance and
association mechanisms (Figure 2.8). Note that the static class diagrams come from
the codification of the observation collections analysis step (user profiles, places,
media, etc.).
Figure 2.8.
Summary model of the domain classes
The dynamic of the system from the point of view of the user was modeled
starting with a use case diagram. In UML, a diagram of use case represents all the
configurations that characterize the behavior of a system. In RAMSES, use cases are
built based on the needs of users from decomposition of the activity into action-
