This
approach would assist in separating large clusters into two or more logical service groups
that can alleviate the dependency challenge.
??? Use the network design composition style to link service clusters that must exchange
messages.
278 Ch. 13 Service-Oriented Logical Design Composition
??? Leverage the circular design composition style to foster role-based distributed services
that are confined to specific implementations, rather than employing fewer services to
handle business or technology process.
??? In large service-oriented projects, combine the proposed design composition styles to
achieve loose coupling effects and avoid a tightly coupled service environment that does
not maintain clear business or technological boundaries.
Service-Oriented Loose Coupling Requirement Example. Take a look now at a project requiring
automated management of a car manufacturing plant, as depicted in Exhibit 13.18. The analysis
proposition diagram illustrates two major activities: analysis decomposition and service-oriented
business integration.
1. The first activity illustrates the separation of the coarse-grained car manufacturing service
cluster into three smaller and distinct service clusters: pickup truck parts, SUV parts, and
car production. Note the decomposed analysis symbol used to denote this separation.
2. The business integration activity is depicted by the analysis integrated symbol, which
integrates the car production cluster with the car production U.
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