此人处理现有系统使用的规范和标准，并确定需要在何处编写增强功能或新组件。
This person works with the specifications and standards used by existing IT systems and determines where enhancements or where new components need to be written.
XML 标准包括一组规范，提供了表示数据的通用方式，以便在两个系统组件之间交换数据，而不管其内部存储方式如何。
XML standards include a set of specifications that provide a common way of representing data so that it can be exchanged between two system components regardless of how it is stored internally.
它是IT系统其他组件必须遵从的标准。
IT was the standard to which other components of IT systems had to conform.
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