1、 Reference numberISO/IEC 19757-2:2008(E)ISO/IEC 2008 INTERNATIONAL STANDARD ISO/IEC19757-2Second edition2008-12-15Information technology Document Schema Definition Language(DSDL)Part 2:Regular-grammar-based validation RELAX NG Technologies de linformation Langage de dfinition de schma de documents(D
2、SDL)Partie 2:Validation de grammaire oriente courante RELAX NG ISO/IEC 19757-2:2008(E)PDF disclaimer This PDF file may contain embedded typefaces.In accordance with Adobes licensing policy,this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed
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5、nd,please inform the Central Secretariat at the address given below.COPYRIGHT PROTECTED DOCUMENT ISO/IEC 2008 All rights reserved.Unless otherwise specified,no part of this publication may be reproduced or utilized in any form or by any means,electronic or mechanical,including photocopying and micro
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7、8 All rights reserved ContentsPageForeword.iiiIntroduction.iv1Scope.12Normative references.13Terms and definitions.14Notation.44.1EBNF.44.2Inference rules.44.2.1Variables.44.2.2Propositions.54.2.3Expressions.65Data model.76Full syntax.87Simplification.97.1General.97.2Annotations.97.3Whitespace.97.4d
8、atatypeLibrary attribute.97.5type attribute of value element.107.6href attribute.107.7externalRef element.107.8include element.107.9name attribute of element and attribute elements.117.10ns attribute.117.11QNames.117.12div element.117.13Number of child elements.117.14mixed element.127.15optional ele
9、ment.127.16zeroOrMore element.127.17Constraints.127.18combine attribute.137.19grammar element.137.20define and ref elements.137.21notAllowed element.147.22empty element.148Simple syntax.149Semantics.159.1Inference rules.159.2Name classes.159.3Patterns.169.3.1choice pattern.169.3.2group pattern.169.3
10、.3empty pattern.169.3.4text pattern.169.3.5oneOrMore pattern.179.3.6interleave pattern.179.3.7element and attribute pattern.179.3.8data and value pattern.189.3.9Built-in datatype library.189.3.10list pattern.199.4Validity.19 ISO/IEC 2008 All rights reservedISO/IEC 19757-2:2008(E)iii10Restrictions.19
11、10.1General.1910.2Prohibited paths.1910.2.1General.1910.2.2attribute pattern.2010.2.3oneOrMore pattern.2010.2.4list pattern.2010.2.5except element in data pattern.2010.2.6start element.2110.3String sequences.2110.4Restrictions on attributes.2310.5Restrictions on interleave.2311Conformance.23Annex A(
12、normative)RELAX NG schema for RELAX NG.24Annex B(informative)Examples.30B.1Data model.30B.2Full syntax example.31B.3Simple syntax example.31B.4Validation example.32Annex C(normative)RELAX NG Compact syntax.34C.1Introduction.34C.2Syntax.34C.3Lexical structure.36C.4Declarations.37C.5Annotations.39C.5.
13、1Support for annotations.39C.5.2Initial annotations.39C.5.3Documentation shorthand.39C.5.4Following annotations.40C.5.5Grammar annotations.40C.6Conformance.40C.6.1Types of conformance.40C.6.2Validator.41C.6.3Structure preserving translator.41C.6.4Non-structure preserving translator.41C.7Media type r
14、egistration template for the RELAX NG Compact Syntax.41Bibliography.43 ISO/IEC 2008 All rights reservedISO/IEC 19757-2:2008(E)ivForewordISO(the International Organization for Standardization)and IEC(the International Electrotechnical Commission)formthe specialized system for worldwide standardizatio
15、n.National bodies that are members of ISO or IEC participate inthe development of International Standards through technical committees established by the respective organizationto deal with particular fields of technical activity.ISO and IEC technical committees collaborate in fields of mutualintere
16、st.Other international organizations,governmental and non-governmental,in liaison with ISO and IEC,alsotake part in the work.In the field of information technology,ISO and IEC have established a joint technical committee,ISO/IEC JTC 1.International Standards are drafted in accordance with the rules given in the ISO/IEC Directives,Part 2.The main task of the joint technical committee is to prepare International Standards.Draft International Standardsadopted by the joint technical committee are ci
