Schemas: Tapping the Potential Within

In the following article, I will explain how to work with the benefits of schema I described in last month's article. I will show how to take advantage of the fact that schemas are extensible and open, and I will demonstrate how you can annotate schemas to further describe your data and understand those annotations when processing the data.

http://msdn.microsoft.com/library/en-us/dnexxml/html/xml081699.asp?frame=true