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© Copyright IBM Corp. 2008. All rights reserved. 69
Chapter 4. White-box thinking:
Understanding collaboration
In the previous chapter, we examined the system from a black-box perspective to
understand what services are required of the system we are considering, and
how it collaborates with other entities outside of it to fulfill the goals of the larger
enterprise. In this chapter, we break open the black box, and look at the system
from a white-box perspective.
We begin with the logical viewpoint. This tends to lead to more flexible
architectures, as opposed to beginning with the distribution viewpoint. We
address the distribution viewpoint in the next chapter.
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See article by Murray Cantor, The role of logical decomposition in system architecture, August,
2007, http://www.ibm.com/developerworks/rational/library/aug07/cantor/