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# W3C XML Schema Activity * * * XML Schema is the XML-based replacement for DTD. * * * ## XML Schema Tutorial To learn more about XML Schema, please read our (#). * * * ## XML Schema XML 1.0 supports DTDs for defining document structure. XML Schema provides better support for applications, document structure, attributes, and data types. Future versions of XML rely on XML Schema to define the type of XML documents. * The structure of XML Schema (XML Schema Structure) defines the language used to define XML Schema. * XML Schema's data types provide extensible data types for XML. * * * ## W3C XML Specifications and Timeline | Specification | Draft/Proposal | Recommendation Date | | :--- | :--- | :--- | | XML Schema (XSD) | | [May 2, 2001](http://www.w3.org/TR/2001/REC-xmlschema-0-20010502/) | | XML Schema 1.0: Structures | | [May 2, 2001](http://www.w3.org/TR/2001/REC-xmlschema-1-20010502/) | | XML Schema 1.0: Datatypes | | [May 2, 2001](http://www.w3.org/TR/2001/REC-xmlschema-2-20010502/) | | | | | | XML Schema (2nd Ed) | | [October 28, 2004](http://www.w3.org/TR/xmlschema-0/) | | XML Schema Structures (2nd Ed) | | [October 28, 2004](http://www.w3.org/TR/xmlschema-1/) | | XML Schema Datatypes (2nd Ed) | | [October 28, 2004](http://www.w3.org/TR/xmlschema-2/) | | | | | | XML Schema Component Designators | [January 19, 2010](http://www.w3.org/TR/xmlschema-ref/) | | | | | | | XML Schema 1.1: Structures | [July 21, 2011](http://www.w3.org/TR/xmlschema11-1/) | | | XML Schema 1.1: Datatypes | [July 21, 2011](http://www.w3.org/TR/xmlschema11-2/) | | * * * ## W3C Reference Manuals: (http://www.w3.org/XML/Schema)