1、BRITISH STANDARD BS ISO/IEC 15476-2:2002 Information technology CDIF semantic metamodel Part 2: Common ICS 35.080 BS ISO/IEC 15476-2:2002 This British Standard, having been prepared under the direction of the DISC Board, was published under the authority of the Standards Policy and Strategy Committe
2、e on 12 November 2002 BSI 12 November 2002 ISBN 0 580 37957 4 National foreword This British Standard reproduces verbatim ISO/IEC 15476-2:2002 and implements it as the UK national standard. The UK participation in its preparation was entrusted to Technical Committee IST/15, Software engineering, whi
3、ch 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 publications referred to in this document may be found in the BSI Catalogue under the section entitled
4、 “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 are responsible for its correct application. Compliance wi
5、th 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, and keep the UK interests informed; monitor related interna
6、tional and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the ISO/IEC title page, pages ii to vi, pages 1 to 41 and a back cover. The BSI copyright date displayed in this document indicates when the document was las
7、t issued. Amendments issued since publication Amd. No. Date Comments Reference number ISO/IEC 15476-2:2002(E)INTERNATIONAL STANDARD ISO/IEC 15476-2 First edition 2002-11-01Information technology CDIF semantic metamodel Part 2: Common Technologies de linformation Mtamodle smantique CDIF Partie 2: Com
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13、I SO/IE2002 C All irthgs serervde iiiContents 1 Scope 1 2 Conformance. 2 2.1 Input conformance 2 2.2 Output conformance. 3 2.3 Round-trip conformance 3 3 Normative references 3 4 Terms and definitions. 4 4.1 From other standards . 4 4.1.1 ISO/IEC 15474-1. 4 4.1.2 ISO/IEC 13238-1. 4 4.1.3 For this st
14、andard . 4 5 Symbols (and abbreviated terms) . 5 5.1 Naming, diagramming and definition conventions . 5 5.2 Abbreviations 5 6 Common subject area overview 5 6.1 Introduction. 5 6.2 Diagram 6 6.3 Classification. 6 6.4 Semantic information 6 6.5 Presentation information 7 6.6 Naming. 7 6.7 Audit data.
15、 8 6.8 Constraints 8 6.9 Derivation. 8 6.10 Abstraction levels. 8 6.11 General structuring mechanism 9 6.11.1 Introduction. 9 6.11.2 Diagram 9 6.11.3 Decomposition and structure definitions. 9 6.11.4 Accessing a specific component in a shared definition. 10 6.11.5 Identical instances in shared defin
16、itions 10 6.11.6 Defining interfaces 11 6.11.7 Model 11 6.12 Computable languages. 11 7 Common subject area summary 12 7.1 AttributableMetaObject classification hierarchy . 12 7.2 MetaEntity summary. 13 7.3 MetaRelationship summary. 16 8 Common subject area specification 19 8.1 Introduction. 19 8.2
17、Subject area definition 19 8.3 Meta-entity definitions 20 8.3.1 AbstractionLevel. 20 8.3.2 AlternateName. 21 8.3.3 ComponentObject. 22 8.3.4 DefinitionObject. 23 8.3.5 Derivation. 25 8.3.6 EquivalenceSet 27 8.3.7 Model 27 BSISO/IEC154762:2002iiiISO/IEC 15476-2:2002(E) vi ISO/IEC A 2002ll irthgs sere
18、rvde8.3.8 PresentationInformationObject 28 8.3.9 ReferencedElement. 29 8.3.10 RootEntity 29 8.3.11 SemanticInformationObject. 30 8.3.12 TextualConstraint 31 8.3.13 ToolUser. 33 8.4 Meta-relationship definitions. 34 8.4.1 ComponentObject.IsActualFor.ComponentObject 34 8.4.2 ComponentObject.References
19、.DefinitionObject 34 8.4.3 DefinitionObject.Contains.ComponentObject 35 8.4.4 DefinitionObject.ContainsAsFormal.ComponentObject.35 8.4.5 EquivalenceSet.HasMember.ComponentObject 36 8.4.6 Model.HasRoot.DefinitionObject. 36 8.4.7 ReferencedElement.DefinesPath.ComponentObject. 37 8.4.8 RootEntity.Creat
20、edBy.ToolUser. 37 8.4.9 RootEntity.Has.AlternateName 38 8.4.10 RootEntity.LastUpdatedBy.ToolUser 38 8.4.11 RootEntity.IsRelatedTo.RootEntity 39 8.4.12 RootEntity.Uses.AlternateName 39 8.4.13 SemanticInformationObject.IsCategorizedIn.AbstractionLevel.40 8.4.14 SemanticInformationObject.ProducedBy.Der
21、ivation 40 8.4.15 SemanticInformationObject.UsedIn.Derivation 41 8.4.16 TextualConstraint.IsConstraintOn.SemanticInformationObject41 Table of Illustrations Figure 1 CDIF family of standards.1 Figure 2 Common subject area .6 Figure 3 AlternateName example8 Figure 4 General structuring mechanism 9 Fig
22、ure 5 Referring to a specific instance inside a shared definition10 Table of Tables Table 1 Allowable values for computable languages and appropriate references 11 BSISO/IEC154762:2002ivISO/IEC 15476-2:2002(E) I SO/IE2002 C All irthgs serervde vForeword ISO (the International Organization for Standa
23、rdization) and IEC (the International Electrotechnical Commission) form the specialized system for worldwide standardization. National bodies that are members of ISO or IEC participate in the development of International Standards through technical committees established by the respective organizati
24、on to deal with particular fields of technical activity. ISO and IEC technical committees collaborate in 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, I
25、SO 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 3. The main task of the joint technical committee is to prepare International Standards. Draft International Standards adopte
26、d by the joint technical committee are circulated to national bodies for voting. Publication as an International 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 part of ISO/IEC 15476 may be the
27、 subject of patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights. ISO/IEC 15476-2 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology, Subcommittee SC 7, Software and system engineering. ISO/IEC 15476 consists of the follo
28、wing parts, under the general title Information technology CDIF semantic metamodel: Part 1: Foundation Part 2: Common Part 3: Data definition Part 4: Data models Part 5: Data flow models Part 6: State/event models BSISO/IEC154762:2002vISO/IEC 15476-2:2002(E) iv ISO/IEC A 2002ll irthgs serervdeIntrod
29、uction This standard will assist the vendors and users of modelling tools and meta-data repositories in developing mechanisms for interchanging information. This standard specifies an element of a family of related standards. When used together, these standards specify a mechanism for transferring i
30、nformation between tools. ISO/IEC 15474-1:2002, Information technology CDIF framework Part 1: Overview, and ISO/IEC 15474-2:2002, Information technology CDIF framework Part 2: Modelling and extensibility, should be read first when initially exploring CDIF. The first explains the overall CDIF archite
31、cture and how the family of standards fits together. The second explains the scope, and modelling approach in CDIF. The CDIF meta- metamodel and extensibility mechanism are also defined in that document. This standard explains the Common subject area of the CDIF semantic metamodel, that defines info
32、rmation common to all other objects in the semantic Meta-model. The CDIF semantic metamodel is used to ensure that the information transferred by tools communicating using CDIF is expressed with an agreed meaning. This standard has been developed with the wide support and participation of vendors, u
33、sers, academia and government involved in or familiar with the CASE industry, its products and the general requirements associated with interchanging information between these products. This document is organized into the following Clauses: Clauses 1 to 5 are prescribed ISO/IEC Clauses Clause 6: Sub
34、ject area overview This Clause gives an overview of the coverage of this subject area. Clause 7: Subject area summary This Clause gives an overview of the content of this subject area. Clause 8: Subject area specification This Clause gives the formal specification of all the objects defined in the s
35、ubject area, and the formal reference to those used, but not defined in the subject area. BSISO/IEC154762:2002viINTENRATIONAL TSANDADR IS/OIE67451 C-2:002(2)EInformation technology CDIF semantic metamodel Part 2: Common 1 Scope The CDIF family of standards is primarily designed to be used as a descr
36、iption of a mechanism for transferring information between modelling tools. It facilitates a successful transfer when the authors of the importing and exporting tools have nothing in common except an agreement to conform to CDIF. The language that is defined for the transfer format also has applicab
37、ility as a general language for import/export from repositories. The CDIF semantic metamodel defined for CASE also has applicability as the basis of standard definitions for use in repositories. The standards which form the complete family of CDIF standards are documented in ISO/IEC 15474-1:2002, In
38、formation technology CDIF framework Part 1: Overview. These standards cover the overall framework, the transfer format and the CDIF semantic metamodel. 15476 CDIF semantic metamodel 15474 CDIF framework Part 1 : Overview Part 2 : Modelling and extensibility Part 1 : Foundation Part 6 : State/event m
39、odels Part 3 : Data definitions Part 4 : Data models Part 5 : Data flow models 15475 CDIF transfer format Part 1 : General rules forsyntaxes and encodings Part 2 : Syntax SYNTAX.1 Part 3 : Encoding ENCODING.1 Part n : . Part n : . Part 2 : CommonFigure 1 CDIF family of standards The diagram in Figur
40、e 1 depicts the various standards that comprise the CDIF family of standards. The shaded box depicts this Standard and its position in the CDIF family of standards. BSISO/IEC154762:20021IS/OIE67451 C-2:002(2)E 2 ISO/IEC A 2002ll irthgs serervdeThis standard defines the Common Subject Area of the CDI
41、F semantic metamodel. This subject area contains meta-objects that are used as the basis of the other subject area standards, and also meta-relationships and meta- attributes that are applicable to all meta-objects. This document is intended to be used by anyone wishing to understand and/or use CDIF
42、. This document provides a definition of a single subject area of the CDIF semantic metamodel. It is suitable for: Those evaluating CDIF, Those who wish to understand the principles and concepts of a CDIF transfer, and Those developing importers and exporters. This document, ISO/IEC 15474-1:2002, In
43、formation technology CDIF framework Part 1: Overview, and the Framework document ISO/IEC 15474-2:2002, Information technology CDIF framework Part 2: Modelling and extensibility, should be read first when initially exploring CDIF and before attempting to read other documents in the CDIF family of sta
44、ndards. While there are no specific prerequisites for reading this document, it will be helpful for the reader to have familiarity with the following: Entity-Relationship-Attribute modelling; Modelling (CASE) tools; Information repositories; Data dictionaries; Multiple meta-layer modelling. 2 Confor
45、mance A product is fully standards conformant to a CDIF subject area standard if and only if it is input-conformant, output- conformant and round-trip conformant to each and every MetaEntity, MetaRelationship, MetaAttribute, and AttributableMetaObject which is defined and/or used in that standard, a
46、nd it is also CDIF architecture conformant. A product may be partially input-conformant, and/or partially output-conformant, and/or partially round-trip conformant to a CDIF subject area standard. 2.1 Input conformance Input conformance for a specific MetaEntity, MetaRelationship, MetaAttribute, or
47、AttributableMetaObject (short: CollectableMetaObject) is determined by applying the following test: A set of meta-data containing all meanings and structures standardized by a CDIF subject area is imported by the product under test. Then the meta-data which has arrived in the product is examined. Th
48、e following options exist for the relation between the input (CDIF) meta-data and the imported (product) meta-data: For a specific CollectableMetaObject: 1 The product is input conformant if each instance of the specific CollectableMetaObject has arrived in the product without change of meaning or s
49、tructure. If the CollectableMetaObject is a meta-entity or meta-relationship, its structural relationships to other CollectableMetaObjects have been preserved. If the CollectableMetaObject is a meta-attribute, the value of the meta-attribute has been preserved. 2 The product is input morphing conformant if each instance of the specific CollectableMetaObject has arrived in
