2. 计算机
  3. Thepurpose of systems design is to specify a(n) ____①____，which defines the technologies to be used to build the proposed infor

Thepurpose of systems design is to specify a(n) ____①____，which defines the technologies to be used to build the proposed infor

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问题 Thepurpose of systems design is to specify a(n)  ____①____，which defines the technologies to be used to build the proposed information systems．This task is accomplished by analyzing the data  models and process models that were initially created during  ____②____．The ____③____  is used to  establish physical processes and data stores across a network．To complete this activity,the analyst  may involve a number of system designers and  ____④____，which may be involved in this activity to  help address business data，process，and location issues．The key inputs to this task are the facts，recommendations，and opinions that are solicited from various sources and the approved  ____⑤____from the decision analysis phase．
③
选项 A、entity—relationship diagram
B、physical data flow diagram
C、data flow diagram
D、physical database model
答案B
解析
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