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RELAX NG

RELAX NG
Filename extension
.rng
Internet media type
application/xml, text/xml
Type of formatXML schema language
Extended fromXML

In computing, RELAX NG (REgular LAnguage for XML Next Generation) is a schema language for XML—a RELAX NG schema specifies a pattern for the structure and content of an XML document. A RELAX NG schema is itself an XML document but RELAX NG also offers a popular compact, non-XML syntax.[1] Compared to other XML schema languages RELAX NG is considered relatively simple.

It was defined by a committee specification of the OASIS RELAX NG technical committee in 2001 and 2002, based on Murata Makoto's RELAX and James Clark's TREX,[2][3][4] and also by part two of the international standard ISO/IEC 19757: Document Schema Definition Languages (DSDL).[5][6] ISO/IEC 19757-2 was developed by ISO/IEC JTC 1/SC 34 and published in its first version in 2003.[7]

  1. ^ RELAX NG Compact Syntax
  2. ^ James Clark. "TREX - Tree Regular Expressions for XML - "TREX has been merged with RELAX to create RELAX NG."". Retrieved 2009-12-28.
  3. ^ Murata Makoto (2002-04-03). "RELAX (Regular Language description for XML) -- "RELAX NG of OASIS. It is a schema language created by unifying RELAX Core and TREX."". Retrieved 2009-12-28.
  4. ^ "TREX and RELAX Unified as RELAX NG, a Lightweight XML Language Validation Specification". Cover Pages. 2001-06-05. Retrieved 2009-12-28.
  5. ^ RELAX NG Specification
  6. ^ RELAX NG Technical Committee
  7. ^ ISO. "ISO/IEC 19757-2:2008 - Information technology -- Document Schema Definition Language (DSDL) -- Part 2: Regular-grammar-based validation -- RELAX NG". ISO. Retrieved 2009-12-28.

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