> XML,XPath,XLink,XPointer concepts. What's the role and definition for them actually?Thanks
XML was designed to describe data, and to focus on what data is.
XPath is a set of syntax rules for defining parts of an XML document.
XLink allows elements to be inserted into XML documents in order to create and describe links between resources.
Xpointer:
the language to be used as a fragment identifier for any URI-reference that locates a resource of Internet media type text/xml or application/xml.
based on the XPath.
hope it works for u.
also, don't forget to look at the official site.
http://www.w3c.org/ for more information.
--Zoe