IBM SG24-7368-00 manual Modeling the system at level, Summary

– The sequence diagram is shown in Figure 6-51.

Figure 6-51 Black-box sequence diagram

Summary

In this section you worked at the highest level of abstraction, modeling the system as a black box. Through the course of this section, you have created:

￿A black-box context diagram identifying the system, I/O entities, and the actors

￿A use case diagram identifying the various benefits (use cases) that the system provides to its stakeholders

￿A black-box sequence diagram identifying the flow of events and operations required of the system

Modeling the system at level 1

In this section you work at the next level of abstraction, modeling the system as a white box. When you have completed this section, you have created:

￿A white-box sequence diagram identifying the flow of events for the provide local weather data operation.

￿New systems as identified during this white-box analysis.

Identify systems that will collaborate at L1

In this task you identify the systems that have to collaborate to realize the level 1 use cases:

￿In the Project Explorer, expand the 01 System Level → Logical Elements → ${Building Blocks}.

￿Right-click the ${system.name} folder and select Copy.

￿Right-click the Logical Elements folder and select Paste.

Chapter 6. Tool support for MDSD 133