Information

  • The XML Schema Working Group was closed on 24 July 2013.

XML Schema Working Group - Publications

Recommendations

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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.

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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.

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Translation for XML Schema Part 0: Primer Second Edition
português

Add content here.

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Add content here.

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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.

Notes

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This document defines a datatype designed for compatibility with IEEE 754 floating-point decimal data, which can be supported by XSD 1.1 processors as an implementation-defined datatype.

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This document lists the names of character categories and character blocks defined by Unicode and used in the regular expression language defined by XSD 1.0 and XSD 1.1.

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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.

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This document specifies the purpose, basic usage scenarios, design principles, and base requirements for an XML schema language.

Candidate Recommendation Snapshots

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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.

Working Drafts

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This document is a guide to versioning XML languages using new XML Schema 1.1 mechanisms. It shows many of the new Schema 1.1 mechanisms, provides context above the schema 1.1 WD, and solicits reader input.

Retired specifications