W3C

XML Schema Current Status

This page summarizes the relationships among specifications, whether they are finished standards or drafts. Below, each title links to the most recent version of a document.

Completed Work

W3C Recommendations have been reviewed by W3C Members, by software developers, and by other W3C groups and interested parties, and are endorsed by the Director as Web Standards. Learn more about the W3C Recommendation Track.

Group Notes are not standards and do not have the same level of W3C endorsement.

Standards

2012-04-05

W3C XML Schema Definition Language (XSD) 1.1 Part 1: Structures

This document specifies the XML Schema Definition Language, which offers facilities for describing the structure and constraining the contents of XML documents, including those which exploit the XML Namespace facility. The schema language, which is itself represented in an XML vocabulary and uses namespaces, substantially reconstructs and considerably extends the capabilities found in XML document type definitions (DTDs). This specification depends on XML Schema Definition Language 1.1 Part 2: Datatypes.

2012-04-05

W3C XML Schema Definition Language (XSD) 1.1 Part 2: Datatypes

XML Schema: Datatypes 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. The datatype language, which is itself represented in XML, provides a superset of the capabilities found in XML document type definitions (DTDs) for specifying datatypes on elements and attributes.

2004-10-28

XML Schema Part 1: Structures Second Edition

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2004-10-28

XML Schema Part 2: Datatypes Second Edition

XML Schema: Datatypes 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. The datatype language, which is itself represented in XML 1.0, provides a superset of the capabilities found in XML 1.0 document type definitions (DTDs) for specifying datatypes on elements and attributes.

2004-10-28

XML Schema Part 0: Primer Second Edition

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Group Notes

2011-06-09

An XSD datatype for IEEE floating-point decimal

2011-06-09

Unicode block names for use in XSD regular expressions

2009-05-05

Basic XML Schema Patterns for Databinding Version 1.0

2009-05-05

Advanced XML Schema Patterns for Databinding Version 1.0

2005-05-11

Processing XML 1.1 documents with XML Schema 1.0 processors

XML Schema 1.0 did not anticipate new versions of XML, and mandated XML 1.0 documents as the starting point for schema-validity assessment. Some users and specifications would like to use XML Schema processors which process XML 1.1 documents, and some implementors of XML Schema processors would like to provide XML 1.1 support.

This Note suggests an implementation strategy for implementors to adopt to enable users and specifications to get such support in a consistent way. All aspects of XML Schema which are liable to re-interpretation as a result of changes in XML 1.1 are discussed.

An implementation of schema-validity assessment employing such a strategy is strictly speaking non-conformant to the current version of the XML Schema specification. The XML Schema WG none-the-less believes that interoperability will best be served by such non-conformant processors being made available to users, until such time as a subsequent version of XML Schema addressing this issue normatively is approved.

1999-02-15

XML Schema Requirements

Drafts

Below are draft documents: Candidate Recommendations . Some of these may become Web Standards through the W3C Recommendation Track process. Others may be published as Group Notes or become obsolete specifications.

Candidate Recommendations

2010-01-19

W3C XML Schema Definition Language (XSD): Component Designators

XML Schema: Component Designators defines a scheme for identifying XML Schema components as specified by XML Schema Part 1: Structures and XML Schema Part 2: Datatypes.

Obsolete Specifications

These specifications have either been superseded by others, or have been abandoned. They remain available for archival purposes, but are not intended to be used.

Retired

2003-01-21

Requirements for XML Schema 1.1

This document contains a list of requirements and desiderata for version 1.1 of XML Schema.

2001-09-25

XML Schema: Formal Description

XML Schema: Formal Description is a formal description of XML types and validity as specified by XML Schema Part 1: Structures.