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   RE: Linking a XML document to its schema

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  • From: "Didier PH Martin" <martind@netfolder.com>
  • To: <reschke@medicaldataservice.de>,"'XML Dev'" <xml-dev@ic.ac.uk>
  • Date: Wed, 24 Nov 1999 14:18:51 -0500

Hi Julian,

Julian said:
And it's even backed by Microsoft (see MSXML behaviour).

Didier reply:
Is this what  you where referring to:

XML Schemas and Namespaces


Internet Explorer 5 enables XML Schemas to be referenced directly from a
namespace declaration. This allows the XML parser to validate the XML
against the grammar defined in the schema. It also allows the object model
to expose data types and to allow navigation to the schema document through
the definition property (see XML Schemas and the DOM).

A namespace declaration can reference a schema by including the URL to the
schema document prefaced by the "x-schema:" string. For example, to
reference an XML Schema for books from an XML file conforming to this
schema, you would write:

<book xmlns="x-schema:http://www.microsoft.com/xml/schema/book.xml">
  <title>Presenting XML</title>
  <author>Richard Light</author>
Here the default namespace refers to the sample book grammar used in the
Defining Elements and Attributes section. The namespace URI is prefixed with
"x-schema:" to indicate to the XML parser that there is a schema
corresponding to this namespace, with the location corresponding to the
remainder of the Universal Resource Identifier (URI). The schema will be
loaded and the document will be validated.


What I have not tried though, is if the following document will be parsed
and validated by MSXML. Did you tested something similar? if yes what was
the result?

<book xmlns="x-schema:http://www.microsoft.com/xml/schema/book.xml">
  <title>Presenting XML</title>
  <author>Richard Light</author>

  <greeting>happy thanksgiving</greeting>


Thanks for your comment
Didier PH Martin

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