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W3C overview of XML Schemas
- http://www.w3.org/XML/Schema
XML Schema part 0: primer
- http://www.w3.org/TR/xmlschema-0
W3C overview of XML Query
- http://www.w3.org/XML/Query
W3C overview of DOM
- http://www.w3.org/DOM
SAX home page
- http://www.megginson.com/SAX/