Common Namespace URIs

Standard namespace URIs used by major XML vocabularies. Recognizing these URIs tells you immediately which XML format you are reading.

Syntax

xml-fundamentals

http://www.w3.org/2001/XMLSchema         — XSD
http://www.w3.org/1999/XSL/Transform      — XSLT
http://www.w3.org/2000/svg               — SVG
http://www.w3.org/2003/05/soap-envelope  — SOAP 1.2
http://www.sitemaps.org/schemas/sitemap/0.9 — Sitemap
http://www.w3.org/2005/Atom             — Atom feeds

Example

xml-fundamentals

<!-- XSD Schema -->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">

<!-- XSLT Stylesheet -->
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

<!-- SVG -->
<svg xmlns="http://www.w3.org/2000/svg">

<!-- sitemap.xml -->
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">