体系架构(Enterprise Architecture, EA)的开山之作,之前一直引用,从来没有系统的学习,通过翻译加深理解,与感兴趣的朋友一起学习探讨。结束了数据描述列,作者继续对框架中流程描述列(第二列)进行解读,分解方法和数据描述列类似。
翻译中自己理解的东西加的比较多,不对的地方大家多多指正。
流程描述列中的业务架构呈现(所有者的角度),可以是一个功能流程图,其中,“过程”是一个业务环节(而不是一个信息系统的一个处理),输入和输出的是业务资源,如:人员、资金、原材料、产品等。
In the model of the business (owner’sperspective) in the process description column, an example might be afunctional flow diagrams.’ in which “process” would be a business process (notan information systems process) and inputs and outputs would be businessresources such as people, cash, material, product, etc.
流程描述列的信息系统架构呈现(设计者的视角),可以是一个数据流图(DFD),其中,“过程”是信息系统(应用程序)的一个处理(而不是一个业务的环节),输入/输出是从“用户视角”——进出应用程序数据集合,以某种顺序的方式将这些输入、输出连接起来。(注意,这里不排除描述一些信息系统之外的人工流程。)
In the model of the information system(designer’s perspective) for the process description column, an example wouldbe a data flow diagram8-’’ in which processes are information systems(application) processes (not business processes) and the inputs/ outputs are“user views”-some aggregations of data elements that flow into and out of theapplication processes, connecting them in some sequential fashion. (Note thatthis does not preclude depicting manual functions that are introduced as partof the information system.)
流程描述的技术架构呈现(建设者的视角), “输入-过程-输出”的含义再次改变。在选择实施方案时要考虑技术的约束,例如,IBM3380直接访问存储设备还是IBM3480磁带子系统(磁盘)、IMS还是客户信息控制系统(CICS)、COBOL还是FORTRAN、IBM3270终端设备(视频显示器)还是IBM个人计算机等等,建设者对“过程”的感知是计算机的功能,输入和输出是I/O设备接口。技术架构呈现可以是一个功能结构图和输入/输出接口。
Proceeding to the technology model(builder’s perspective)-process description column, we see that the meaning of“input-process-output’’ changes once again. In applying the physicalconstraints of the technology chosen for implementation, for example, IBM 3380Direct Access Storage Devices versus IBM 3480 Magnetic Tape Subsystems (disks),IMS versus Customer Information Control System (CICS), COBOL versus FORTRAN;IBM 3270 terminal devices (video displays) versus IBM Personal Computers, etc.,the builder’s perception of a process becomes a computer function, and inputsand outputs are device formats. The predictable example would be a structurechart lo-” and screen/device formats.
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