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OASIS Unites TREX and RELAX to Create Lightweight XML Language Validation Specification.


Business & High-Tech Editors

BOSTON--(BUSINESS WIRE)--June 5, 2001

Members of the OASIS TREX TREX Tree Regular Expressions for XML
TREX Futures Industry Trade Exchange
TREX Tardec R&D Execution System
TREX Text Retrieval and Information Extraction
TREX Technology Research Experimental
 Technical Committee announced their decision to integrate TREX (Tree Regular Expressions for XML XML
 in full Extensible Markup Language.

Markup language developed to be a simplified and more structural version of SGML. It incorporates features of HTML (e.g., hypertext linking), but is designed to overcome some of HTML's limitations.
) and RELAX (REgular LAnguage description for XML REgular LAnguage description for XML (RELAX) is a specification for describing XML-based languages. A description written in RELAX is called a RELAX grammar.

RELAX Core has been approved as an ISO/IEC Technical Report 22250-1.
) in order to collaborate on a unified lightweight specification for validating XML-based languages.

They renamed their work RELAX NG.

RELAX was initially developed at the Information Technology Research and Standardization Centre (INSTAC) in Japan, which advances Japanese national standards for XML under the auspices of the Japanese Standard Association (JSA JSA - Japanese Standards Association. ). TREX was created by James Clark, widely regarded as one of the most prolific contributors to the field of structured information standards. Clark decided to continue development of his schema language at the OASIS XML interoperability consortium in March 2001.

"RELAX and TREX both focus on simplicity," said James Clark, chair of what is now the OASIS RELAX NG Technical Committee. "RELAX NG will remain straightforward and easy to use, incorporating the best of TREX and RELAX."

"It's important to note that RELAX NG isn't intended to replace the W3C XML Schema An XML schema from the W3C. It is a superset of DTD, which is the standard SGML schema. Unlike DTD, W3C XML Schema is written in XML syntax, which although more verbose than DTD, can be created with any XML tools.  Recommendation. Instead, it represents a lightweight alternative to Schema," explained Murata Makoto, one of the original developers of RELAX. "We believe that users are likely to adopt multiple schema languages, and many will find RELAX NG fills a very important need."

According to the OASIS technical committee, the specification offers a middle ground that will make RELAX NG a useful tool for many developers. The team is interested in facilitating conversion among DTDs, XML Schema and RELAX NG.

"RELAX NG fits in well with the W3C XML Schema Formal Description," added Clark. "Our hope is that RELAX NG will be a constructive influence on the future development of XML Schema."

Karl Best, director of technical operations at OASIS, applauded the decision of the technical committee to unite TREX and RELAX. "The goal of OASIS is to bring together parallel standards development efforts whenever possible, to promote collaboration and prevent overlap," he said. "We welcome this decision by the TREX Technical Committee to unite their efforts with RELAX."

Those interested in participating in the development of RELAX NG are encouraged to join the OASIS RELAX NG Technical Committee. More information is available on http://www.oasis-open.org/committees/relax-ng/index.shtml.

About OASIS

OASIS (http://www.oasis-open.org) is the international, not-for-profit consortium that advances electronic business by promoting open, collaborative development of interoperability specifications. With the United Nations, OASIS sponsors ebXML, a global framework for electronic business data exchange. OASIS operates XML.ORG, the non-commercial portal that delivers information on the use of XML in industry. The XML.ORG Registry provides as an open community clearinghouse for distributing and locating XML application schemas, vocabularies and related documents. OASIS serves as the home for industry groups interested in developing XML specifications. OASIS technical work embraces conformance, security, business transactions, repositories and other interoperability issues.

OASIS sponsors include Accenture, Access360, Adobe Systems, AND Data Solutions, Arbortext, Auto-trol, Aventail, Baltimore Technologies, B-Bop Associates, BEA Systems, Bentley Systems, The Boeing Company, Bowstreet, Business Logic Corporation, Chrystal Software, Cincom Systems, Cohesia, Commerce One, Critical Path, CrossLogix, Cyclone Commerce, DataChannel, Dataloom, Deutsche Post AG, Documentum, EADS EADS European Aeronautic Defence and Space Company N.V.
EADS Expeditionary Air Defense System (USMC)
EADS Extended Air Defense Systems
EADS Environmental Assessment Data System
EADS Echelons Above Division Study
 Airbus, election.com, empolis, Engage, Enigma, Excelergy, eXcelon, Extricity Software, First Call Corporation, Hewlett-Packard, IBM (International Business Machines Corporation, Armonk, NY, www.ibm.com) The world's largest computer company. IBM's product lines include the S/390 mainframes (zSeries), AS/400 midrange business systems (iSeries), RS/6000 workstations and servers (pSeries), Intel-based servers (xSeries) , Identrus, Informix, Infoteria, Innodata, Intel, Interwoven in·ter·weave  
v. in·ter·wove , in·ter·wo·ven , inter·weav·ing, inter·weaves

v.tr.
1. To weave together.

2. To blend together; intermix.

v.intr.
, IPNet Solutions, ITEDO ITEDO Ingenieurbüro Für Technische Dokumentation Und Illustration
ITEDO Illustration Technique Echange de Données
 Software, Ivis Group, Jamcracker, Logistics Management Institute, Mediaplex, Mercator Software, Microsoft, Netegrity, NetFish Technologies, Netscape/AOL, NextPage, NII (National Information Infrastructure) The U.S. government's policy for managing advanced technology in the country. The Clinton/Gore administration (1993-2001) was very enthusiastic about the Internet and proposed that it should be funded by private industry and be  Enterprise Promotion Association, Nimble Technology, NIST (National Institute of Standards & Technology, Washington, DC, www.nist.gov) The standards-defining agency of the U.S. government, formerly the National Bureau of Standards. It is one of three agencies that fall under the Technology Administration (www.technology. , Novell, ObjectSpace, Oblix, OpenNetwork Technologies, Pearson Education, Planet 7 Technologies, Popkin Software, Reuters Limited, SAA Consultants, Sabre, SAP, SeeBeyond, Sequoia Software, Silverstream Software, SoftQuad Software, Software AG, Sterling Commerce, StreamServe, Sun Microsystems, Synth-Bank, Tata Consultancy Services Tata Consultancy Services Limited (TCS Limited company) is one of the world’s largest providers of information technology, consulting, services and business-process outsourcing which commenced operations in 1968. As of 2007, it is Asia's largest And India's No. , The Tamalpais Group, Thomas Technology Solution, Tibco, Unisys, US Defense Information Systems Agency, Virtual Access Networks, Visa International, Wavo, webMethods, Whitehill Technologies, Xerox, XML Global, XMLSolutions and Xyvision Enterprise Solutions.
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Date:Jun 5, 2001
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