Figure 7-14 Example diagram for range of radar with block and associated requirements

Understanding collaborations

Understanding collaborations basically the same as with UML—in our practice at IBM, we have found sequence diagrams to be most useful for a variety of reasons. We will still use them with SysML, but blocks will play the part of roles along the top of the sequence diagram. Because blocks are classifiers, the result will look the same as with UML.11

Figure 7-15shows an example of an interaction diagram using blocks as roles in the interaction.

11For a more detailed discussion of this interaction diagram, see Balmelli’s article, cited in footnote 8 on page 160, p. 166

164Model Driven Systems Development with Rational Products

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IBM SG24-7368-00 manual Understanding collaborations