Hi, i am a student working on XML projects. i was going through your resume.dtd.
i have scanned the entire web to my patience but i still fail to understand( after reading numerous articles on namespaces and xmlns) as to reason for referencing
as below

<!-- A collection of resumes -->
<!ELEMENT resumes (resume*)>
<!ATTLIST resumes id ID #IMPLIED
    xmlns     CDATA #FIXED "http://xmlresume.sourceforge.net/resume/0.0"
    xmlns:xsi CDATA #FIXED "http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation CDATA #IMPLIED>
......

why do we need to refer the XML schema from a DTD???
i would be relieved and grateful for a prompt reply because this confusion is delaying my project work.
thanks