1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA
2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any
3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 978-0-626-22228-4 SANS 22938:2009 Edition 1 ISO 22938:2008 Edition 1SOUTH AFRICAN NATIONAL STANDARD Document management Electronic content/document
4、management (CDM) data interchange format This national standard is the identical implementation of ISO 22938:2008 and is adopted with the permission of the International Organization for Standardization. Published by SABS Standards Division 1 Dr Lategan Road Groenkloof Private Bag X191 Pretoria 0001
5、 Tel: +27 12 428 7911 Fax: +27 12 344 1568 www.sabs.co.za SABS This standard may only be used and printed by approved subscription and freemailing clients of the SABS.SANS 22938:2009 Edition 1 ISO 22938:2008 Edition 1 Table of changes Change No. Date Scope National foreword This South African standa
6、rd was approved by National Committee SABS TC 171, Document management applications, in accordance with procedures of the SABS Standards Division, in compliance with annex 3 of the WTO/TBT agreement. This SANS document was published in February 2009. This standard may only be used and printed by app
7、roved subscription and freemailing clients of the SABS. Reference number ISO 22938:2008(E) ISO 2008INTERNATIONAL STANDARD ISO 22938 First edition 2008-12-01 Document management Electronic content/document management (CDM) data interchange format Gestion de documents Format dchange de donnes pour la
8、gestion de documents/du contenu lectronique SANS 22938:2009This standard may only be used and printed by approved subscription and freemailing clients of the SABS.ISO 22938:2008(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may
9、be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobes licensing policy. The ISO Central Secretariat accept
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12、roduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22
13、 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2008 All rights reservedSANS 22938:2009This standard may only be used and printed by approved subscription and freemailing clients of the SABS.ISO 22938:2008(E) ISO 2008 All rights reserved iiiCo
14、ntents Page Foreword iv Introduction.v 1 Scope1 2 Normative references1 3 Terms and definitions .1 4 Symbols and abbreviated terms 1 5 XML-based data interchange format .2 5.1 General .2 5.2 Use of XML for content/document management data .2 5.2.1 Overview of XML structure.2 5.2.2 Content/document m
15、anagement (CDM) specific XML structure the DTD.2 5.3 The explicit DTD for CDM data interchange .6 5.4 Representing CDM data using the DTD an example.8 Bibliography11 SANS 22938:2009This standard may only be used and printed by approved subscription and freemailing clients of the SABS.ISO 22938:2008(
16、E) iv ISO 2008 All rights reservedForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body int
17、erested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnic
18、al Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the
19、technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member 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.
20、ISO shall not be held responsible for identifying any or all such patent rights. ISO 22938 was prepared by Technical Committee ISO/TC 171, Document management applications, Subcommittee SC 2, Application issues. SANS 22938:2009This standard may only be used and printed by approved subscription and f
21、reemailing clients of the SABS.ISO 22938:2008(E) ISO 2008 All rights reserved vIntroduction This International Standard specifies a consistent interchange format for data contained in electronic content/document management (CDM) systems, including documents, their associated resources, and retrieval
22、 index values that are stored in, or managed by, these technologies. Such a standard should facilitate the exact interchange of CDM data, i.e. the standard should not require that the data be irreversibly modified or packaged within a format that does not allow the reconstruction of the original dat
23、a. Therefore, this International Standard avoids choosing one particular data format and anointing it as the interchange standard for CDM. Rather, this International Standard specifies a common markup format, based on the XML (eXtensible Markup Language), which encapsulates all forms of CDM data. A
24、DTD (document type definition) describes the XML markup used for CDM data transfer. The XML format is a W3C (World Wide Web Consortium) standard, adopted in February 1998. XML is extensible, so that additional CDM formats may be easily specified by appropriately updating the DTD. The purpose of this
25、 International Standard is to define standards for information interchange in a way that benefits both the consumers and vendors of content/document management systems. Some possible benefits are as follows: a) document information can be both exported from and imported to one standards-compliant CD
26、M system to another; b) disparate CDM systems within an enterprise (due to autonomous selection, replacement, or merger/acquisition) will be able to exchange or consolidate CDM information. To this end, the standards are defined with the goal of striking a balance between being either too restrictiv
27、e or too general. They should be broad enough to encompass all common CDM information types and all common uses of CDM systems, as well as ones that might be expected in the future. On the other hand, the standards should be restrictive enough so that CDM vendors do not have inordinate difficulty co
28、mplying with the standards. SANS 22938:2009This standard may only be used and printed by approved subscription and freemailing clients of the SABS.SANS 22938:2009This standard may only be used and printed by approved subscription and freemailing clients of the SABS.INTERNATIONAL STANDARD ISO 22938:2
29、008(E) ISO 2008 All rights reserved 1Document management Electronic content/document management (CDM) data interchange format 1 Scope This International Standard defines the interchange of content/document management (CDM) data and all associated resources. 2 Normative references The following refer
30、enced documents are indispensable for the application of this International Standard. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 12651, Electronic imaging Vocabulary 3 Terms and d
31、efinitions For the purposes of this document, the terms and definitions given in ISO 12651 and the following apply. 3.1 document XML stream containing information content and related metadata 3.2 rendition electronic encoding of a page of content 4 Symbols and abbreviated terms CDM content/document
32、management DTD document type definition W3C World Wide Web Consortium WWW World Wide Web XML eXtensible Markup Language SANS 22938:2009This standard may only be used and printed by approved subscription and freemailing clients of the SABS.ISO 22938:2008(E) 2 ISO 2008 All rights reserved5 XML-based d
33、ata interchange format 5.1 General The document interchange format for electronic documents is an application of the XML. XML is an extensible, flexible, platform-independent format, and has been adopted by the W3C as a standard (officially a “recommendation” in W3C terminology). The primary use of
34、this International Standard is to exchange data between diverse document management systems that do not already have an exchange methodology in place. This International Standard is considered to be the foundational platform from which other XML-based exchange standards are developed, ensuring a com
35、mon framework throughout the document management industry. 5.2 Use of XML for content/document management data 5.2.1 Overview of XML structure XML consists of markup and data. The markup consists of (usually paired) tags called elements, which may contain descriptive data called attributes. Data is
36、the non-markup content residing between element pairs. The elements can be nested, so that one element may contain sub-elements, which can in turn contain sub-sub-elements, etc. This International Standard defines the elements, element structure, and element attributes suitably, so that the various
37、forms of CDM data, resources, index values, etc., can be clearly and unambiguously described and included as data. The model which describes this is an XML DTD. The precise DTD is the essential content of this International Standard. 5.2.2 Content/document management (CDM) specific XML structure the
38、 DTD Figures 1 and 2 describe the high-level model to create the DTD. The elements and their meanings are: a) cdm_interchange This is the name of the XML application, or DTD. b) cdm_collection This is the collection of documents contained in the XML. It consists of a name, a set of index values for
39、the collection and a set of documents. c) index_field This element references index_name, index_description, and index_content elements. Any index_set element shall contain at least one index_field element. d) index_record This element organizes multiple index_field entries into a logical group. e)
40、doc_content This element defines the document contents being transmitted as part of the cdm_interchange operation. Each doc_content shall contain one or more renditions. f) rendition This element defines the renditions, if any, and their attributes. Rendition includes the content and rsrc_data eleme
41、nts. These elements are used to provide a mechanism to define the access_method, encoding and compression for each rendition. The access_method is required, and the encoding and compression attributes are optional. Supported access_method include Base64, URI, and MIME. g) rsrc_data This element encl
42、oses CDM resource data within each rendition. Examples of resource data are bitmaps and fonts that are needed to render the contained document. SANS 22938:2009This standard may only be used and printed by approved subscription and freemailing clients of the SABS.ISO 22938:2008(E) ISO 2008 All rights
43、 reserved 3h) annotations This element encloses the annotation-related information for a rendition. The annotation is expressed as a stream of knowledge that would be defined by the vendor. Some vendors have highlight information, while others might have blobs, bitmaps or data files. The knowledge c
44、ontent of the annotation would be vendor-specific. i) content This element provides information related to the required access_method, form of data encoding and compression technique. j) index_name This element provides for a name to be associated with the index element record attributes. k) record
45、attributes This element provides a name and description for the index record. l) index_description This element allows a description containing unconstrained text to be associated with the index for documentation of information purposes. m) index_content This element contains the value for the index
46、. SANS 22938:2009This standard may only be used and printed by approved subscription and freemailing clients of the SABS.ISO 22938:2008(E) 4 ISO 2008 All rights reserved* There may be 0 or more occurrences of the item. + There may be 1 or more occurrences of the item. Figure 1 High-level XML design
47、for CDM data interchange SANS 22938:2009This standard may only be used and printed by approved subscription and freemailing clients of the SABS.ISO 22938:2008(E) ISO 2008 All rights reserved 5+ There may be 1 or more occurrences of the item. Figure 2 High-level XML design continued SANS 22938:2009Th
48、is standard may only be used and printed by approved subscription and freemailing clients of the SABS.ISO 22938:2008(E) 6 ISO 2008 All rights reserved5.3 The explicit DTD for CDM data interchange Table 1 presents the data interchange structure presented as a DTD and comments to allow non-readers of
49、XML to understand the model. The following DTD for ISO 22938 is intended to provide the framework/mechanism to exchange data between diverse systems in the absence of a specific schema. Organizations that do not have an implementation- specific model of this DTD shall use this model for specific information exchange between diverse document management systems. To create an application-specific instance of this DTD, users shall use the ISO 22938 DTD as the framework, or model, ensuring the appropriate level of inf
