From a design point of view, it helps to concentrate on the role of XML documents, rather than on their structure.

从设计的观点来看，这有助于把焦点放在XML文档的角色上，而不是放在它们的结构上。

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In order to use the role notation you will need to use the Internal Structure notation, discussed next.

为了使用角色记号，你将会需要使用下面讨论的内部结构记号。

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The project structure allows configuration of users based on role and the incorporation of specific data sources for analysis.

项目结构允许基于角色的用户配置，并且可以将特定的数据源包含到分析中。

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One bank CIO told Krishnamurthy bringing Hadoop into the organization seemed at odds with his role of maintaining structure in IT.

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Milk, liver, peanuts and eggs also are naturally rich in choline, and studies have shown that it seems to play a role in metabolism, cell structure to the workings of brain neurotransmitters.

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Yet another source of Mr Blair's self-confidence is a feeling that Britain could play a pivotal role in Europe's complex structure of cross-border defence relationships.

ECONOMIST: Blair’s defence offensive | The