XML Namespaces

• Goal: be able to mix vocabularies unambiguously
• Uses URIs as qualifiers for the names
• Syntax based on attributes "xmlns" to declare namespaces
• Use of prefix to bind namespaces to instances

<p xmlns="http://www.w3.org/1999/xhtml"> Classic example based on
<a href="http://www.w3.org/">HTML</a> markup</p>

<x:p xmlns:x="http://www.w3.org/1999/xhtml"> Classic example based on
<x:a href="http://www.w3.org/">HTML</x:a> markup</x:p>