ISO/IEC INTERNATIONAL STANDARD 15476-4 First edition 2005-12-15 Information technology CDIF semantic metamodel - Part 4: Data models Technologies de I'information Metamodele sémantique CDIF Partie 4: Modeles de données Reference number ISO/IEC 15476-4:2005(E) IEC ISo @ISO/IEC 2005 ISO/IEC 15476-4:2005(E) PDFdisclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may 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 Adobe's licensing policy. The Iso Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation ?ISO/IEC2005 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 microfilm, without permission in writing from either isO at the address below or IsO's member body in the country of the requester. ISO copyright office Case postale 56 . CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland @ISO/IEC2005-All rights reserved ISO/IEC 15476-4:2005(E) Contents 1 Scope 2 Conformance. 2.1 General 2.2 Input conformance...... 2.3 Output conformance... 2.4 Round-trip conformance 3 Normativereferences. 4 Termsanddefinitions. 4.1 From other International Standards ..... 4.1.1 ISO/IEC 15474..... 4.1.2 ISO/IEC13238-1. 4.1.3 ForthisInternationalStandard 5 Symbols (and abbreviated terms). 5.1 Naming, diagramming and definition conventions .. 5.2 Abbreviations... 5.3 Notation for this subjectarea.. 6 Data models subject area overview... 6.1 Introduction. 6.2 Diagrams. 6.3 Entities 6.4 Relationships 6.4.1 Binary relationship 12 6.4.2 N-ary relationship.... 6.4.3 Simple relationship ... 12 6.4.4 Complexrelationship 12 6.5 Roles. 6.6 Cardinalities 6.6.1 Outer cardinalities. 16 6.6.2 Inner cardinalities 6.7 Multi-player roles . 18 6.8 Role constraints. 20 6.9 Attributes.. 22 6.10 Keys and access paths. .23 6.11 Referential integrity 6.12 Supertypes and subtypes .29 6.12.1 30 6.12.2 Exclusivity 31 6.12.3 Orthogonality 32 6.12.4 Inheritance .33 6.13 Refinement of inherited characteristics 6.13.1 Refinement of attribute characteristics... 6.13.2 Refinement of relationship characteristics..... 6.14 Subsets .36 6.15 Clusters ..37 6.16 Projections 6.17 7 Data models subject area summary. 43 7.1 AttributableMetaObjecthierarchy 43 7.2 MetaEntity summary ... 45 on All rights reserved ii ISO/IEC 15476-4:2005(E) 7.3 MetaRelationship summary... .50 8 Data models subject area specification. 8.1 8.2 Subject area definition. .54 8.3 Meta-entity definitions. .55 8.3.1 AccessPath. .55 8.3.2 Attribute 8.3.3 CandidateKey .58 8.3.4 Cluster .59 8.3.5 ComponentObject, 8.3.6 8.3.7 DataModelObject... 8.3.8 DataModelSubset.... 8.3.9 DefinitionObject.... 8.3.10 Entity.... 8.3.11 ForeignKey. .68 8.3.12 InheritableDataModelObject ..68 8.3.13 Key. .69 8.3.14 ProjectedAttribute... .70 8.3.15 ProjectionComponent... .71 8.3.16 Relationship ... 73 8.3.17 8.3.18 RoleConstraint .. 8.3.19 8.3.20 SemanticlnformationObject 8.3.21 8.3.22 SubtypeSetMembershipCriterion.. .92 8.4 Meta-relationship definitions .94 8.4.1 AccessPath.Incorporates.Attribute .94 8.4.2 AccessPath.Instantiates.Key .95 8.4.3 Attribute.lsDiscriminatorFor.SubtypeSetMembershipCriterion .. .96 8.4.4 Attribute.IslnheritedFrom.Attribute. ..96 8.4.5 CandidateKey.Incorporates.ForeignKey. .97 8.4.6 Cluster.Collects.DataModelObject..... .97 8.4.7 ComponentObject.References.DefinitionObject 8.4.8 DataModel.Coliects.DataModelObject........ 8.4.9 DataModelObject.ActsAs.RolePlayer. 8.4.10 DataMod