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Extensible Markup Language (XML) Activity Statement

The Extensible Markup Language (XML) is a simple, flexible text format derived from SGML (ISO 8879). The W3C created and maintains the XML specification. The W3C is also the primary center for developing other cross-industry specifications that are based on XML. Some of these are done within the XML Activity, such as XML Query and XML Schema, and some (such as SVG) in other W3C areas. The XML Activity tries to keep a balance between maintaining stability and backwards compatibility, making improvements that help to encourage interoperability, and bringing new communities into the world of XML.

Highlights since the previous W3C Advisory Committee meeting

Low W3C staff resources in the XML Activity means that much work is done without significant technical staff involvement.

Overall, XML has seen a resurgence in uptake, largely because of the publishing industry. Producing multiple output formats for documents, such as PDF, print, Web, EPUB and more, from the same input source, was one of the original design goals for XML, and the maturity of the XML toolchain has made it a good and safe choice. W3C has started work in the area of digital publishing as a separate Activity, but the XML work remains within the XML Activity.

XQuery 3.0 and XPath 3.0 were published as W3C Recommendations.

XQuery 3.1, XPath 3.1 and XSLT 3.0 have been published as Last Call Working Drafts.Upcoming Activity Highlights

XSLT 3 is attracting interest with streaming of large documents and the new packaging support. It is currently in Last Call. XQuery 3.1 and XSLT 3.0 also feature an increased level of support for working with the JSON format, including map and array data structures.

XProc, the the XML pipelining language, has been gaining industry traction; the Working Group is now chartered to produce a version 2.0.

Efficient XML (EXI) is used in places where it cannot be seen, such as between a computer and a digital camera; an EXI profile for memory-constrained devices was published, and a new EXI version may increase visibility.

The XML Core Working Group has taken on some work on XML Security, as well as continuing infrastructure-level work and also maintaining XML Schema.

Summary of Activity Structure

GroupChairTeam ContactCharter
Efficient XML Interchange Working Group
Takuki KamiyaCarine BournezChartered until 31 May 2015
XML Coordination Group
Paul GrossoLiam QuinChartered until 31 May 2015
XML Core Working Group
Paul Grosso, Norman WalshLiam QuinChartered until 31 May 2015
XML Processing Model Working Group
Norman WalshLiam QuinChartered until 31 May 2016
XML Query Working Group
Jim Melton, Andrew ColemanLiam QuinChartered until 31 May 2015
XSLT Working Group
Sharon AdlerLiam Quin, Carine BournezChartered until 31 May 2015

This Activity Statement was prepared for TPAC 2014 per section 5 of the W3C Process Document. Generated from group data.

Liam R. E. Quin, XML Activity Lead

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