Plan to use XML namespaces, Part 1 (IBM developerWorks)
David Marston
writes about XML namespaces on IBM's developerWorks.
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This article introduces XML namespaces, explores their practical benefits, and shows you how they are used in the standard XML formats and tools defined by the W3C. Several W3C specifications are mentioned, notably XML Schema and XSLT, which offer useful ideas for using namespaces to your advantage. Best practices range from terminology usage up through system-wide design."