【单选题】【消耗次数：1】
建立数据字典的分阶段是在？
①
系统规划
②
系统分析
③
系统设计
④
系统实施
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系统分析工作的步骤为（）。
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详细调查和分析用户需求，确定初步的逻辑模型，编制系统分析报告。
②
详细调查和分析用户需求，系统模拟，确定初步的逻辑模型，编制系统分析报告。
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系统调研，分析用户需求，系统分工，确定初步的物理模型，编制系统分析报告。
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系统分析阶段对每个数据类描述的结果将构成系统设计阶段数据类设计及[填空1]设计的基础。
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