xmlns:xsi

XML Schema Namespace Declaration

This is not an attribute, but a namespace pseudo-attribute. The value provides a prefix to use for the @xsi_schemaLocation attribute an included vocabulary requires. All namespace prefixes must be associated with a URL, and the prefix “xsi” has been set to the URL for the World Wide Web Consortium (W3C) XML Schema.

With the Element

<article>
Value Meaning
http://www.w3.org/2001/XMLSchema-instance The prefix “xsi” has been set to the URL of the W3C XML Schema.
Restriction: @xmlns:xsi has a fixed value which may not be changed in the document.

Example


<article
  xmlns:mml="http://www.w3.org/1998/Math/MathML"
  xmlns:xlink="http://www.w3.org/1999/xlink"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  article-type="article"
  dtd-version="1.1d2"
  specific-use="migrated"
  xml:lang="en">
<front>...</front>
<body>...</body>
<back>...</back>
</article>