• This is a super-simple, but great overview of XML Namespaces

    http://www.w3schools.com/xml/xml_namespaces.asp

    This article is great for understanding why they exist.

    http://msdn.microsoft.com/en-us/magazine/cc302166.aspx

    The W3C formal definition (if you ever have problems falling asleep)

    http://www.w3.org/TR/REC-xml-names/[/url]

    Edit: Make my links clickable :w00t:

    "I cant stress enough the importance of switching from a sequential files mindset to set-based thinking. After you make the switch, you can spend your time tuning and optimizing your queries instead of maintaining lengthy, poor-performing code."

    -- Itzik Ben-Gan 2001