1、BRITISH STANDARD BS EN 82045-2:2005 Document management Part 2: Metadata elements and information reference model The European Standard EN 82045-2:2005 has the status of a British Standard ICS 01.110 BS EN 82045-2:2005 This British Standard was published under the authority of the Standards Policy a
2、nd Strategy Committee on 25 February 2005 BSI 25 February 2005 ISBN 0 580 45564 5 National foreword This British Standard is the official English language version of EN 82045-2:2005. It is identical with IEC 82045-2:2004. The UK participation in its preparation was entrusted to Technical Committee G
3、EL/3, Documentation and graphical symbols, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document ma
4、y be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users
5、are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, a
6、nd keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 105 and a back cover. The BSI copyright notice displayed in this docu
7、ment indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEAN STANDARD EN 82045-2 NORME EUROPENNE EUROPISCHE NORM February 2005 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europ
8、isches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2005 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 82045-2:2005 E ICS 01.110 English version Document management Part 2: Meta
9、data elements and information reference model (IEC 82045-2:2004) Gestion de documents Partie 2 : Elments de metadonnes et modle dinformation de rfrence (CEI 82045-2:2004) Dokumentenmanagement Teil 2: Metadaten und Informationsreferenzmodelle (IEC 82045-2:2004) This European Standard was approved by
10、CENELEC on 2004-12-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national sta
11、ndards may be obtained on application to the Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and no
12、tified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembour
13、g, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Foreword The text of document 3/712/FDIS, future edition 1 of IEC 82045-2, prepared by IEC TC 3, Information structures, documentation and graphical symbols, in co-operation with SC 1,
14、 Basic conventions, and SC 8, Construction documentation, of ISO TC 10, Technical product documentation, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 82045-2 on 2004-12-01. The following dates were fixed: latest date by which the EN has to be implemented at nation
15、al level by publication of an identical national standard or by endorsement (dop) 2005-10-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2007-12-01 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 8
16、2045-2:2004 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following notes have to be added for the standards indicated: ISO 7200 NOTE Harmonized as EN ISO 7200:2004 (not modified). ISO 9660 NOTE Harmonized as EN 29660:1989 (no
17、t modified). ISO 10303-11 NOTE Harmonized as EN ISO 10303-11:1995 (not modified). ISO 10303-31 NOTE Harmonized as EN ISO 10303-31:1995 (not modified). IEC 61286 NOTE Harmonized as EN 61286:2002 (modified). IEC 61360-1 NOTE Harmonized as EN 61360-1:2002 (not modified). _ Page2 EN820452:2005 CONTENTS
18、INTRODUCTION.5 1 Scope.7 2 Normative references .7 3 Terms, definitions and abbreviations 8 3.1 Terms and definitions 8 3.2 Abbreviations 9 4 Structure of the Metadata collection table.9 4.1 General .9 4.2 No. and DMA (Document Management Activity) 10 4.3 Obl. (Obligation)11 4.4 Metadata identifier.
19、11 4.5 Metadata label.12 4.6 Definition.12 4.7 Predefined values .12 4.8 Reference to the EXPRESS information model13 4.9 Reference to the XML Document Type Definition (DTD) 13 4.10 Cross-references to other standards or recommendations .13 5 Rules for the presentation of metadata on/in documents.13
20、 6 Relations between IEC 82045-2 and other information models .13 7 Conformance requirements.14 7.1 General .14 7.2 Conformance Class 1 (CC 1).14 7.3 Conformance Class 2 (CC 2).15 7.4 Conformance Class 3 (CC 3).16 8 Metadata resource for document management .17 Annex A (normative) Document managemen
21、t information model36 A.1 General .36 A.2 Reference model for document management.36 A.3 List of entities36 A.4 Entity descriptions.38 A.5 Referencing to objects of interest external to the information reference model of IEC 82045-273 A.6 Express source code.74 A.7 EXPRESS-G graphical representation
22、.81 Annex B (normative) XML implementation for document management data .85 B.1 General .85 B.2 Introduction to the XML DTD .85 B.3 XML Document Type Definition (DTD) .86 B.4 Application example 1: Metadata for this standard document.92 B.5 Application example 2: Metadata for a circuit diagram .95 P
23、age3 EN820452:2005 Annex C (informative) Relations to other standards concerning metadata in this field 99 C.1 Relation to ISO 7200:2004 99 C.2 Relations to ISO 15836 Information and documentation The Dublin Core metadata element set99 C.3 Relations to ISO 690-2 99 Annex D (normative) Information ob
24、ject registration.100 D.1 Document identification .100 D.2 Schema identification 100 Annex E (informative) Protocol Implementation Conformance Statement (PICS) pro forma 101 Annex ZA (normative) Normative references to international publications with their corresponding European publications .103 Bi
25、bliography104 Figure 1 Relations between IEC 82045-2 and other information models.14 Table 1 Entities assigned to CC 1 15 Table 2 Additional entities assigned to CC 2 15 Table 3 Additional entities assigned to CC 3 16 Table 4 Collection of metadata.17 Page4 EN820452:2005 INTRODUCTION This part of IE
26、C 82045 presents information for the management of documents throughout their life cycle. It is based on the document concepts and the overall framework established in IEC 82045-1. It is composed of the following items: a) A table collecting metadata element identifiers and their language-dependent
27、labels including their definitions etc., shown in Clause 8. b) Annex A: an EXPRESS based language-independent information model serving as an implementation-independent information reference model used in data exchange and for ease of implementation of document management systems. It provides the co
28、ntext of metadata elements associated with document management systems. c) Annex B: an XML (eXtensible Markup Language) DTD (Document Type Definition) based on the information reference model and the metadata collection. These parts use different modelling methods, with different limitations: The EX
29、PRESS modelling method, using entities, relations and attributes and by which a complex network of entities and relations can be modelled; The XML DTD modelling method, using elements and (XML) attributes, but with the limitation that it has to be hierarchical; The table of document attributes (meta
30、data elements) with an entirely flat structure, incapable of expressing even hierarchical relations, but simple and sufficient for many purposes. In order to make the resulting descriptions equivalent, starting from the EXPRESS model: to make the document attributes fit into the hierarchical DTD mod
31、el some entities and relations must be specialised and also renamed to take account of their original relations. to make the attributes fit into the table structure, they need to be even further specialised and the complete structure hidden in the names (identifiers) of the attributes, to the extent
32、 necessary to make them unambiguous in the actual context. Therefore the names (identifiers) used in the table are often slightly different, but related, to those used to identify corresponding attributes in the EXPRESS model or in the XML DTD. Relation to ISO 10303 Within the ISO 10303 series, part
33、s 212 17 and 214 18 1have been developed using a common information model core. Both parts have been designed for the purpose of product data management in their respective application fields. Although the actual parts of ISO 10303 series contain some document related concepts they have not been dev
34、eloped focusing on document management requirements. 1Numbers in square brackets refer to the bibliography. Page5 EN820452:2005 It was originally envisaged to extend the above model subset with respect to document management requirements whilst keeping the technology used within the ISO 10303 series
35、. During the development of this part of IEC 82045 however, it was found that doing so would limit the application possibilities of this standard and would force system developers to implement implicitly also the technologies used within the ISO 10303 series. Therefore, the EXPRESS reference model i
36、n this standard is independent of any part of ISO 10303, although relevant concepts have been reused where possible. This standard provides a concept that allows establishing relations from the information model of this standard to any other object of interest available within an information model e
37、xternal to this standard. The approach chosen in this part of IEC 82045 allows establishing in a flexible way relationships to items of interest for a document management system, available in an external information system, for example a PDM (Product Data Management) system. Page6 EN820452:2005 DOCU
38、MENT MANAGEMENT Part 2: Metadata elements and information reference model 1 Scope This part of IEC 82045 provides a comprehensive set of standardized metadata elements for document management in accordance with IEC 82045-1. To enable this, a standardized EXPRESS-based information reference model 30
39、is provided in Annex A. The information reference model is the basis from which the metadata elements are derived. The information reference model also provides a standardized framework for data exchange and a basis for the implementation of a document management system. This document also provides
40、a standardized DTD (Document Type Definition) based on the XML (eXtensible Markup Language) language for the purpose of document exchange, see Annex B. It is directed towards end users of document management systems. The Annexes are in addition directed primarily to developers of software for such s
41、ystems. The document is intended as a general basic resource for document management. This part of IEC 82045 does not specify physical locations nor arrangements of labels on documents, nor layouts of drawings, documents etc. Physical implementation of the information reference model or exchange for
42、mats are not part of this standard. NOTE Although sometimes closely related to the document management, the following items are outside of scope of this standard: planning, product data management, workflow management, configuration change management, and electronic file management. These items may,
43、 however, be referred to as external objects. 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 a
44、mendments) applies. IEC 61346 (all parts), Industrial systems, installations and equipment and industrial products Structuring principles and reference designations IEC 61355:1997, Classification and designation of documents for plants, systems and equipment IEC 82045-1:2001, Document management Par
45、t 1: Principles and methods Page7 EN820452:2005 ISO 31-0:1992, Quantities and units Part 0: General principles ISO 639-1:2002, Codes for the representation of names of languages Part 1: Alpha-2 code ISO/IEC 2382-1:1993, Information technology Vocabulary Part 1: Fundamental terms ISO 3166-1:1997, Cod
46、es for the representation of names of countries and their subdivisions Part 1: Country codes ISO 5455:1979, Technical drawings Scales ISO 5457:1999, Technical product documentation Sizes and layout of drawing sheets ISO 8601:2000, Data elements and interchange formats Information interchange Represe
47、ntation of dates and times ISO 10303-1:1994, Industrial automation systems and integration Product data representation and exchange Part 1: Overview and fundamental principles 3 Terms, definitions and abbreviations 3.1 Terms and definitions For the purposes of this part of IEC 82045, the definitions
48、 of IEC 82045-1 and the following terms and definitions apply. 3.1.1 information model conceptual model that describes a specific organization of data to provide communication for a given application context ISO 10303-1, 3.2.21, modified 3.1.2 application reference model information model that forma
49、lly describes the information requirements and constraints for an application area ISO 10303-1, 3.2.8, modified 3.1.3 data representation of facts, concepts, or instructions in a formalized manner suitable for communication, interpretation, or processing by human beings or by automatic means ISO/IEC 2382-1, 01.01.02, modified 3.1.4 context frame of reference in which a construct is specified
