An architectural Style. defines as a family of such systems in terms of a (1) of
An architectural Style. defines as a family of such systems in terms of a (1) of structural organization.More specifically an architectural style. defines a vocabulary of (2) and connector types, and a set of (3) on how they can be combined. For many styles there may also exist one or more (4) that specify how to determine a system's overall properties from the properties of its parts. Many of architectural styles have been developed over the years.The best-known examples of (5) architectures are programs written in the Unix shell．
(1)
A．pattern
B．data flow
C．business process
D．position level
正确答案：A
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