As in the screenshots above, the structure of the schemas is different in the XML parser and XML composer steps.

如上述屏幕截图所示，架构的结构在XML分析器和XML编写器步骤中是不同的。

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For example, an XML parser extracts data from an XML data source.

例如，xml解析器可以从一个XML数据源提取数据。

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An XML parser can parse any XML document, but it still needs a model to perform validation.

xml解析器可以解析任何XML文档，但它仍然需要模型来执行验证。

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