IBM SG24-7368-00 manual Understanding distribution of responsibility

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Chapter 5. Understanding distribution of responsibility

In the previous two chapters, we have examined the general transformation from looking at the system as a black box to looking at it as a white box, and understanding its context, its collaboration with other entities, and the distribution of responsibilities across logical entities in both the black-box and white-box perspectives. In doing so, we have concentrated primarily on the logical viewpoint. In this chapter, we turn our focus to the distribution viewpoint.

Joint realization is the MDSD technique for integrating various viewpoints in one table, allowing us to reason about systems concerns across as many viewpoints as necessary. Localities are the means for reasoning visually about distribution of logical responsibilities to locations where processing will take place. We discuss them first.

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