如果我们着眼于如何合并一系列范围较窄的模块来满足XML的数据需求，就可以避免使用功能等同、填满小段代码的大代码块。

You can avoid the equivalent of large blocks filled with spaghetti code if you think in terms of how to combine a series of narrowly scoped modules to meet the XML data needs.

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模块能够选择完全人造的主键——在拒绝所有数据表示角色时分解出唯一性需求的那些主键。

Instead, the modules are able to choose wholly artificial primary keys — ones that isolate the uniqueness requirement while refusing any data-representation role.

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其次，根据住院部门工作流程进行需求分析、系统数据库的设计和系统功能模块的划分及详细设计。

Next, we carry on the demand analysis according to the working flow of hospitalized department, the system database design and system function module division.

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