Namespaces

Code

<?xml version="1.0" encoding="UTF-8"?>
<root xmlns="http://example.com/default"
      xmlns:xs="http://www.w3.org/2001/XMLSchema"
      xmlns:office="urn:office:1.0">
  <office:item>Stapler</office:item>
  <xs:schema ref="schema.xsd"/>
  <element>Default namespace applies here</element>
</root>

Explanation

XML namespaces qualify element and attribute names with URIs to avoid collisions between vocabularies. The xmlns attribute declares a default namespace while xmlns:prefix binds a prefix that must precede each namespaced element. Unlike elements, attributes are not affected by a default namespace.

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