源和目标包括关系数据库管理系统、ERP系统、大型机遗留系统、XML和专用数据格式。

Sources and targets include relational database management systems, ERP systems, mainframe legacy systems, XML, and proprietary data formats.

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虽然可以按照您希望的格式组织任何专用DNS，但是最简单的理解DNS系统的途径是查看已经在Internet上使用的域名结构。

Although you can organize any private DNS in the format that you want, it is easiest to understand the DNS system by looking at the structure used on the Internet.

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例如，他们可能向您提供了一种现有的系统，您可以通过HTTP来访问以xml文档(采用他们自己的惟一专用格式)的形式给出的报价。

For instance, they may provide you with an existing system that you can access through HTTP to a quote presented as an XML document in their own unique, proprietary format.

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