Hi Folks,
Ken Holman sent me some corrections and additions. Here's the updated version. Thanks Ken! /Roger
The XML technologies use URLs to reference external resources. For example, XML Schema uses a URL in the <xs:include> and <xs:import> elements to reference other XML Schema documents.
The below list shows several XML technologies and where they use URLs. Please let me know if I have missed any place where URLs are used in these technologies to reference external resources. /Roger
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XML
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1. The <!ENTITY> external entity
2. The SYSTEM url in a <!DOCTYPE> declaration
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XML Schema
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1. The <xs:include> element
2. The <xs:import> element
3. The <xs:redefine> element
4. The xsi:schemaLocation attribute
5. The xsi:noNamespaceSchemaLocation attribute
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XSLT
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1. The document() function
2. The <xsl:include> element
3. The <xsl:import> element
4. The <?xml-stylesheet> PI
5. The <xsl:import-schema> element
6. The unparsed-text() function
7. The unparsed-text-available() function
8. The <xsl:result-document> element
9. All the XPath functions listed below
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XPath
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1. The doc() function
2. The collection() function
3. The base-uri() function
4. The doc-available() function
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Schematron
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1. The <sch:include> element
2. All the XPath functions listed above
