BS ISO IEC 19757-5-2011 Information technology Document schema definition languages (DSDL) Extensible datatypes《信息技术 文件格式定义语言(DSDL) 可扩展数据类型》.pdf
《BS ISO IEC 19757-5-2011 Information technology Document schema definition languages (DSDL) Extensible datatypes《信息技术 文件格式定义语言(DSDL) 可扩展数据类型》.pdf》由会员分享,可在线阅读,更多相关《BS ISO IEC 19757-5-2011 Information technology Document schema definition languages (DSDL) Extensible datatypes《信息技术 文件格式定义语言(DSDL) 可扩展数据类型》.pdf(26页珍藏版)》请在麦多课文档分享上搜索。
1、raising standards worldwide NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BSI Standards Publication Information technology Document Schema Definition Languages (DSDL) Part 5: Extensible Datatypes BS ISO/IEC 19757-5:2011National foreword This British Standard is the UK implem
2、entation of ISO/IEC 19757-5:2011. The UK participation in its preparation was entrusted to Technical Committee IST/41, Document description and processing language. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to
3、 include all the necessary provisions of a contract. Users are responsible for its correct application. BSI 2011 ISBN 978 0 580 54613 6 ICS 35.240.30 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Stand
4、ards Policy and Strategy Committee on 31 October 2011. Amendments issued since publication Amd. No. Date Text affected BRITISH STANDARD BS ISO/IEC 19757-5:2011 Reference number ISO/IEC 19757-5:2011(E) ISO/IEC 2011INTERNATIONAL STANDARD ISO/IEC 19757-5 First edition 2011-10-01 Information technology
5、Document Schema Definition Languages (DSDL) Part 5: Extensible Datatypes Technologies de linformation Langages de dfinition de schma de documents (DSDL) Partie 5: Types de donnes extensibles BS ISO/IEC 19757-5:2011ISO/IEC 19757-5:2011(E) ISO/IEC 2011 All rights reserved iiiContents Page Foreword iv
6、Introduction . v 1 Scope 1 2 Normative references 1 3 Terms and definitions . 2 4 Extensible Datatypes schema overview . 2 5 Common constructs 3 5.1 Common types . 3 5.2 Common attributes 4 5.3 Extension elements . 4 5.4 Versioning and compatibility . 5 6 Simplification . 5 6.1 Include elements . 5
7、6.2 Same-named datatypes 6 7 Document element 7 8 Top-level elements 7 8.1 div element 8 8.2 Top-level extension elements 8 9 Datatype definition 8 9.1 Named datatypes . 8 9.2 Anonymous datatypes 8 9.3 Whitespace processing 9 9.4 Mechanisms for defining datatypes 9 Annex A (normative) RELAX NG schem
8、a for Extensible Datatypes documents . 16 Bibliography 18 BS ISO/IEC 19757-5:2011ISO/IEC 19757-5:2011(E) iv ISO/IEC 2011 All rights reservedForeword ISO (the International Organization for Standardization) and IEC (the International Electrotechnical Commission) form the specialized system for worldw
9、ide standardization. National bodies that are members of ISO or IEC participate in the development of International Standards through technical committees established by the respective organization to deal with particular fields of technical activity. ISO and IEC technical committees collaborate in
10、fields of mutual interest. Other international organizations, governmental and non-governmental, in liaison with ISO and IEC, also take 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 draft
11、ed 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 Standards adopted by the joint technical committee are circulated to national bodies for voting. Publication as an Intern
12、ational Standard requires approval by at least 75 % of the national bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights. IS
13、O/IEC 19757-5 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology, Subcommittee SC 34, Document description and processing languages. ISO/IEC 19757 consists of the following parts, under the general title Information technology Document Schema Definition Languages (DSDL):
14、 Part 1: Overview Part 2: Regular-grammar-based validation RELAX NG Part 3: Rule-based validation Schematron Part 4: Namespace-based Validation Dispatching Language (NVDL) Part 5: Extensible Datatypes Part 7: Character Repertoire Description Language (CREPDL) Part 8: Document Semantics Renaming Lang
15、uage (DSRL) Part 9: Namespace and datatype declaration in Document Type Definitions (DTDs) Part 11: Schema Association BS ISO/IEC 19757-5:2011ISO/IEC 19757-5:2011(E) ISO/IEC 2011 All rights reserved vIntroduction This part of ISO/IEC 19757 specifies a powerful, XML-based language which enables users
16、 to create and extend their own libraries of datatypes using straightfoward declarative XML constructs. Such libraries are well-suited to being used in pipelining validation processes in conjunction with other XML schema languages. Unlike W3C Schema 1 , ISO/IEC 19757-2:2008 (RELAX NG) does not itsel
17、f provide a declarative mechanism for users to define their own datatypes. If they are not satisfied with the two built-in types of string and token, RELAX NG users have had either to use a pre-written library bundled with their validator, or to program a datatype library using that validators API.
18、Such programmed datatype libraries are hard to construct for non-programmer users, and built-in datatype libraries are often insufficient for users needs. BS ISO/IEC 19757-5:2011INTERNATIONAL STANDARD ISO/IEC 19757-5:2011(E) ISO/IEC 2011 All rights reserved 1Information technology Document Schema De
19、finition Languages (DSDL) Part 5: Extensible Datatypes 1 Scope This part of ISO/IEC 19757 specifies an XML language that allows users to create and extend datatype libraries for their own purposes. The datatype definitions in these libraries can be used by XML validators and other tools to validate
20、content and make comparisons between values. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any am
21、endments) applies. IETF RFC 3023, XML Media Types, Internet Standards Track Specification, January 2001, http:/www.ietf.org/rfc/rfc3023.txt IETF RFC 3987, Internationalized Resource Identifiers (IRIs), Internet Standards Track Specification, January 2005, http:/www.ietf.org/rfc/rfc3987.txt ISO/IEC 1
22、9757-2:2008, Information technology Document Schema Definition Language (DSDL) Part 2: Regular-grammar-based validation RELAX NG W3C XML, Extensible Markup Language (XML) 1.0 (Fourth Edition), W3C Recommendation, 16 August 2006, edited in place 29 September 2006, http:/www.w3.org/TR/2006/REC-xml-200
23、60816 W3C XML Names, Namespaces in XML 1.0 (Third Edition), W3C Recommendation, 8 December 2009, http:/www.w3.org/TR/2009/REC-xml-names-20091208/ W3C XPath 2.0, XML Path Language (XPath) 2.0, W3C Recommendation, 23 January 2007, http:/www.w3.org/TR/2007/REC-xpath20-20070123/ W3C XPath 2.0 Functions,
24、 XQuery 1.0 and XPath 2.0 Functions and Operators, W3C Recommendation, 23 January 2007, http:/www.w3.org/TR/2007/REC-xpath-functions-20070123/ W3C XSLT 2.0, XSL Transformations (XSLT) Version 2.0, W3C Recommendation, 23 January 2007, http:/www.w3.org/TR/2007/REC-xslt20-20070123/ W3C XLink 1.0, XML L
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