Requirement for attributes with schema scope

[Henry S. Thompson]

"Arnold, Curt" <Curt.Arnold at hyprotech.com> writes:

> [Comments on qualified attributes in instances, and a proposal for
>  top-level attribute declarations which can be 'ref'ed]

Something along these lines has been considered, and it's not out of
the question that it may happen.

For the time being, the only schema-valid way to introduce an
attribute from other than the namespace partition scoped to the
containing element is by way of an attribute GROUP from another
namespace, e.g.

  <type>
   . . .
   <attributeGroup ref='foo:baz'/>
  </type>

See the schema for schemas [1] for an example of how this is done, wrt
xml:lang.

ht

[1] http://www.w3.org/TR/xmlschema-1/#normative-schemaSchema
-- 
  Henry S. Thompson, HCRC Language Technology Group, University of Edinburgh
     2 Buccleuch Place, Edinburgh EH8 9LW, SCOTLAND -- (44) 131 650-4440
	    Fax: (44) 131 650-4587, e-mail: ht at cogsci.ed.ac.uk
		     URL: http://www.ltg.ed.ac.uk/~ht/

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