W3C's role in making the Recommendation is to draw attention to the specification and to promote its widespread deployment.
The authors of this document are the members of the XML Schema Working Group.
Different parts of this specification have different editors.
This document was produced under the 24 January 2002 Current Patent Practice (CPP) as amended by the W3C Patent Policy Transition Procedure.
The Working Group maintains a public list of patent disclosures relevant to this document; that page also includes instructions for disclosing a patent.
An individual who has actual knowledge of a patent which the individual believes contains Essential Claim(s) with respect to this specification should disclose the information in accordance with section 6 of the W3C Patent Policy.
The English version of this specification is the only normative version.
Information about translations of this document is available at
This second edition is a new version, it merely incorporates the changes dictated by the corrections to errors found in the first edition as agreed by the XML Schema Working Group, as a convenience to readers.
Please refer to the errata for this document, which may include some normative corrections.
This document is also available in these non-normative formats: XML, XHTML with visible change markup, Independent copy of the schema for schema documents, A schema for built-in datatypes only, in a separate namespace, and Independent copy of the DTD for schema documents. Copyright © 2004 is part 2 of the specification of the XML Schema language.
It defines facilities for defining datatypes to be used in XML Schemas as well as other XML specifications.