namespace of attributes?

Mark D. Anderson mda at
Mon Sep 13 03:43:19 BST 1999

> >And what is a namespace-aware validator (is there such a thing?) supposed
> >to do here? If "good" was declared as 
> ><!ATTLIST good a (2|3) 1 3 b CDATA 17>
> >then which have i defaulted, a global "b", or a "n1:b"?
> >and is the "a" attribute in violation of the dtd while n1:a is not?
> >is it in violation because it was not declared or has the wrong value?
> I had trouble making sense of your ATTLIST declaration

yeah, i had a mechanical problem with my editor.....

> but I don't believe
> it is possible to assign namespaces to anything but element or attribute
> instances unless you use ATTLIST to define a default xmlns value for every
> element.  Consider a DTD that contains the following declarations:
> <!ELEMENT e1 (e3)*>
> <!ATTLIST e1 xmlns "urn:namespace1">
> <!ELEMENT e2 (e3)*>
> <!ATTLIST e2 xmlns "urn:namespace2">

i think i get the element case, or at least get it more.
where i'm losing it is in attributes.

can i do this in a dtd?
     a (1|2) 1
     "urn:namespace2:a" (3|4) 3>

if i can't, then how can i declare the two supposedly different "a"
attributes shown in the XML Names spec example:
<x xmlns:n1="" 
   xmlns="" >
  <good a="1"     b="2" />
  <good a="1"     n1:a="2" />


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