单选题:数据库设计的四个阶段分别是(  )

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题目内容:
数据库设计的四个阶段分别是(  ) A.需求分析、概念设计、逻辑设计、物理设计
B.需求分析、选择DBMS、实施、维护
C.选择DBMS、逻辑设计、物理设计、实施维护
D.选择DBMS、需求分析、概念设计、逻辑设计

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背景 某施工单位在所承接的机电工程项目上与某劳务公司签订了劳务分包合同,约定该劳务公司安排40名农民工做力工,进行基础地

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