Finally, consider the following diagramed relationships that are formed to provide a solution
for the market overview download activities:
??? The market analysis consumer and the market analysis atomic service maintain an implied
unidirectional design relationship because design best practices advocate that a consumer
should not have direct access to an internal service contained in a hosting service. Note
that the market analysis atomic service is an isolated entity??”based on a service visibility
definition??”and thus protected from outside access.
??? Therefore, the download market overview composite service is the only asset that maintains
an apparent unidirectional design relationship with the market analysis consumer.
This relationship yields quarterly downloads of market overview reports.
??? The download market overview composite service is also regarded as an intermediary.
Note the tagging that identifies its responsibilities: A-Aggregator, L-Locator, and
R-Router.
Summary 255
??? The download market overview composite service maintains apparent bidirectional relationship
with its constituents: the market analysis atomic service and the visual effects
composite service. This service visibility aspect is regarded as internal.
??? The visual effects composite service maintains an apparent design relationship with the
market analysis atomic service. This internal relationship (defined as service visibility)
is needed because of the images and the stock charts required by the market analysis
service.
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