XML Information Set

<h2 id="infoset-augmentation">Infoset augmentation</h2>
<p>Infoset augmentation or infoset modification refers to the process of modifying the infoset during <a href="/facts/XML_schema/uWam66Rj">schema</a> validation, for example by adding default attributes.  The augmented infoset is called the post-schema-validation infoset, or <a href="/facts/PSVI/X6Uly3dm">PSVI</a>.
<a class="footnote-ref" id="fnref:4" href="#fn:4"><sup>4</sup></a>
</p><p>Infoset augmentation is somewhat controversial, with claims that it is a violation of modularity and tends to cause interoperability problems, since applications get different information depending on whether or not validation has been performed.
<a class="footnote-ref" id="fnref:5" href="#fn:5"><sup>5</sup></a>
</p><p>Infoset augmentation is supported by <a href="/facts/XML_Schema_(W3C)/X6Uly3dm">XML Schema</a> but not <a href="/facts/RELAX_NG/16dj0TGq">RELAX NG</a>.
</p>
<h2 id="serialization">Serialization</h2>
<p>Typically, XML Information Set is serialized as XML.<a class="footnote-ref" id="fnref:6" href="#fn:6"><sup>6</sup></a> There are also serialization formats for <a href="/facts/Binary_XML/MG5fUaGF">Binary XML</a>, <a href="/facts/Comma-separated_values/dv1pSR1r">CSV</a>,<a class="footnote-ref" id="fnref:7" href="#fn:7"><sup>7</sup></a> and <a href="/facts/JSON/bs1rUAhd">JSON</a>.<a class="footnote-ref" id="fnref:8" href="#fn:8"><sup>8</sup></a>
</p>
<h2 id="see-also">See also</h2>
<p>XML Information Set instances:
</p>
<ul><li><a href="/facts/Document_Object_Model/GglE6jGx">Document Object Model</a></li>
<li><a href="/facts/Xpath_data_model/Rt3u1Dwp">Xpath data model</a></li>
<li><a href="/facts/SXML/qkdbjjro">SXML</a></li></ul>

<h2 id="external-links">External links</h2>
<ul><li><a href="http://www.w3.org/TR/xml-infoset/">"XML Information set recommendation (Second Edition)"</a>. W3C. 4 February 2004.</li></ul>

<h2 id="references">References</h2>

<ol>
<li id="fn:1"><p>W3C XML Infoset <a href="http://www.w3.org/TR/xml-infoset/" target="_blank">http://www.w3.org/TR/xml-infoset/</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li>
<li id="fn:2"><p>"XML Information Set" (Working Draft ed.). W3C. 20 December 1999. <a href="http://www.w3.org/TR/1999/WD-xml-infoset-19991220" target="_blank">http://www.w3.org/TR/1999/WD-xml-infoset-19991220</a> <a href="#fnref:2" class="footnote-back-ref">↩</a></p></li>
<li id="fn:3"><p>"XML Information Set" (Second ed.). W3C. 4 February 2004. <a href="http://www.w3.org/TR/2004/REC-xml-infoset-20040204" target="_blank">http://www.w3.org/TR/2004/REC-xml-infoset-20040204</a> <a href="#fnref:3" class="footnote-back-ref">↩</a></p></li>
<li id="fn:4"><p>XML Schema 1.1 Part 1: Structures <a href="http://www.w3.org/TR/xmlschema11-1/" target="_blank">http://www.w3.org/TR/xmlschema11-1/</a> <a href="#fnref:4" class="footnote-back-ref">↩</a></p></li>
<li id="fn:5"><p>RELAX NG and W3C XML Schema Archived September 27, 2007, at the Wayback Machine, James Clark, 4 Jun 2002 <a href="http://www.imc.org/ietf-xml-use/mail-archive/msg00217.html" target="_blank">http://www.imc.org/ietf-xml-use/mail-archive/msg00217.html</a> <a href="#fnref:5" class="footnote-back-ref">↩</a></p></li>
<li id="fn:6"><p>"Extensible Markup Language (XML)". W3C. Retrieved 9 October 2014. <a href="http://www.w3.org/TR/REC-xml/" target="_blank">http://www.w3.org/TR/REC-xml/</a> <a href="#fnref:6" class="footnote-back-ref">↩</a></p></li>
<li id="fn:7"><p>XmlCsvReader Implementation <a href="http://msdn.microsoft.com/en-us/library/aa302293.aspx" target="_blank">http://msdn.microsoft.com/en-us/library/aa302293.aspx</a> <a href="#fnref:7" class="footnote-back-ref">↩</a></p></li>
<li id="fn:8"><p>Apache CXF JSON Support <a href="https://cxf.apache.org/docs/json-support.html" target="_blank">https://cxf.apache.org/docs/json-support.html</a> <a href="#fnref:8" class="footnote-back-ref">↩</a></p></li>
</ol>

XML Information Set open-in-new

XML Information Set