There are three rudimentary formations that influence the nature of almost any architecture that
is built: atomic, composite, and cluster . These are also the pillars of internal or external service
structures that are intrinsically influenced by service relationships. Obviously, in the real world,
these fundamental structures are typically combined and form complex formations that propose
remedies to difficult organizations??™ problems.
The following sections present rudimentary abstraction structures that depict fundamental
units of analysis that will be used in the impending service-oriented modeling initiatives:
??? Conceptual Service Atomic Structure
??? Conceptual Service Composite Structure
??? Conceptual Service Cluster
CONCEPTUAL SERVICE ATOMIC STRUCTURE. An atomic conceptual service is an indivisible
entity that can constitute an idea or even a process. It typically presents a single concept that will
more likely evolve during a service life cycle as an unbreakable autonomous service. Furthermore,
an atomic service structure should never be a subject for decomposition during a service life
span. Accordingly, service-oriented modeling disciplines advocate that an atomic entity is too
fine-grained to be subdivided into smaller units.
Imagine, for example, a product manager in a banking institute that plans to provide new
savings opportunities for domestic customers. This proposal includes an interest-bearing money
market account that can even be further subcategorized into more specific customer offerings:
traditional money market account, high-yield money market account, and jumbo money market
account.
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