SO方法的服务建模可以按照实施的阶段划分为三个阶段。(请作答此空)是对候选服务进行分类,根据是否便于复用和组装,是否具有业务对齐性来决定是否将服务暴露。( )根据对业务领域的理解和现有系统的分析,将服务的实现分配到相应的服务构件中,并决定服务的实现方式。
- A.服务发现
- B.服务设计
- C.服务实现
- D.服务规约
正确答案及解析
正确答案
解析
SO方法的服务建模:按照实施的阶段,服务建模可以分为服务发现、服务规约和服务实现三个阶段。(1)服务发现。采用自上而下、自下而上和中间对齐的方式,得到候选服务。(2)服务规约。对候选服务进行分类,根据是否便于复用和组装,是否具有业务对齐性来决定是否将服务暴露。同时,需要考虑服务的信息系统特性。服务规约还包括服务编排、服务库和服务总线中间件模式的设计等过程。(3)服务实现。根据对业务领域的理解和现有系统的分析,将服务的实现分配到相应的服务构件中,并决定服务的实现方式。具体的实现方式既可以由现有系统暴露相关功能为服务,或者重新开发相关功能提供务,也可以由合作伙伴来提供服务。无论采用哪种方式,系统分析师都需要对于关键点进行技术可行性分析。
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