How to use `XML` and `Web Service Data Sources` as a source for `Reporting Services`?

How to use XML and Web Service Data S开发者_StackOverflow中文版ources as a source for Reporting Services?

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To get an idea of how it works, here is a very simple example.

And here is the official version: Reporting Services: Using XML and Web Service Data Sources. If you scroll down to the Examples section, you can step through the process.