1、BRITISH STANDARD BS ISO/IEC 15476-1:2002 Information technology CDIF semantic metamodel Part 1: Foundation ICS 35.080 BS ISO/IEC 15476-1:2002 This British Standard, having been prepared under the direction of the DISC Board, was published under the authority of the Standards Policy and Strategy Comm
2、ittee on 11 November 2002 BSI 11 November 2002 ISBN 0 580 37956 6 National foreword This British Standard reproduces verbatim ISO/IEC 15476-1:2002 and implements it as the UK national standard. The UK participation in its preparation was entrusted to Technical Committee IST/15, Software engineering,
3、 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 publications referred to in this document may be found in the BSI Catalogue under the section enti
4、tled “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. Complianc
5、e 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, and keep the UK interests informed; monitor related int
6、ernational 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 v, a blank page, pages 1 to 11 and back cover. The BSI copyright date displayed in this document indicates when the d
7、ocument was last issued. Amendments issued since publication Amd. No. Date Comments Reference number ISO/IEC 15476-1:2002(E)INTERNATIONAL STANDARD ISO/IEC 15476-1 First edition 2002-11-01Information technology CDIF semantic metamodel Part 1: Foundation Technologies de linformation Mtamodle smantique
8、 CDIF Partie 1: Fondation BSISO/IEC154761:2002BSISO/IEC154761:2002iiIS/OIE67451 C-1:002(2)E 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
9、From other standards . 4 4.1.1 ISO/IEC 15474-1. 4 4.1.2 ISO/IEC 13238-1. 4 4.2 For this standard . 4 5 Symbols (and abbreviated terms) . 5 5.1 Naming, diagramming and definition conventions . 5 5.2 Abbreviations 5 6 Foundation subject area overview 5 7 Foundation subject area summary 6 7.1 Attributa
10、bleMetaObject classification hierarchy . 6 7.2 MetaEntity summary. 6 7.3 MetaRelationship summary. 6 8 Foundation subject area specification 7 8.1 Introduction. 7 8.2 Subject area definition 7 8.3 Meta-entity definitions 8 8.3.1 RootObject. 8 8.3.2 RootEntity 10 8.4 Meta-relationship definitions. 11
11、 8.4.1 RootEntity.IsRelatedTo.RootEntity. 11 Table of Illustrations Figure 1 CDIF family of standards 1 Figure 2 Foundation subject area 5 BSISO/IEC154761:2002iiiIS/OIE67451 C-1:002(2)E vi ISO/IEC A 2002ll irthgs serervdeForeword ISO (the International Organization for Standardization) and IEC (the
12、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 organization to deal with particul
13、ar 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, ISO and IEC have establis
14、hed 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 adopted by the joint technical
15、 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 subject of patent right
16、s. ISO and IEC shall not be held responsible for identifying any or all such patent rights. ISO/IEC 15476-1 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 following parts, under the ge
17、neral 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/IEC154761:2002ivIS/OIE67451 C-1:002(2)E I SO/IE2002 C All irthgs serervde vIntroduction This standard wi
18、ll 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 information between tool
19、s. 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 architecture and how the famil
20、y 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 Foundation subject area of the CDIF semantic metamodel, which is used to ensure that the inf
21、ormation held by tools communicating using CDIF express the information they pass with an agreed meaning. This subject area contains the basic objects on which all others, including extensions, must be based. This standard has been developed with the wide support and participation of vendors, users,
22、 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: Subject
23、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 definition This Clause gives the formal specification of all the objects defined in the subject a
24、rea, and the formal reference to those used, but not defined in the subject area. BSISO/IEC154761:2002vINTENRATIONAL TSANDADR IS/OIE67451 C-1:002(2)EI SO/IE2002 C All irthgs serervde 1Information technology CDIF semantic metamodel Part 1: Foundation 1 Scope The CDIF family of standards is primarily
25、designed to be used as a description 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 tra
26、nsfer format also has applicability 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 document
27、ed in ISO/IEC 15474-1:2002, Information 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 : Fou
28、ndation Part 6 : State/event models Part 3 : Data definitions Part 4 : Data models Part 5 : Data flow models 15475 CDIF transfer format Part 1 : General rules for syntaxes and encodings Part 2 : Syntax SYNTAX.1 Part 3 : Encoding ENCODING.1 Part n : . Part n : . Part 2 : Common Figure 1 CDIF family o
29、f standards The diagram in Figure 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/IEC154761:20021IS/OIE67451 C-1:002(2)E 2 ISO/IEC A 2002ll irthgs serervdeThis standard defines th
30、e Foundation subject area of the CDIF semantic metamodel. This subject area contains the basic objects on which all other objects, including those defined using extensibility, must be based. This document is intended to be used by anyone wishing to understand and/or use CDIF. This document provides
31、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. The document, ISO/IEC 15474-1:2002, Information technology CDIF
32、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 standards. While there are no
33、 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 Conformance A product is fully s
34、tandards 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, and it is also CDIF archite
35、cture 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 AttributableMetaObject (sh
36、ort: 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. The following options exist
37、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 structure. If the Collectab
38、leMetaObject 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 t
39、he specific CollectableMetaObject has arrived in the product, but with some changes in meaning or structure. If the CollectableMetaObject is a meta-attribute, the value(s) for some instances of the meta-attribute have changed. 3 The product is not input conformant for that CollectableMetaObject if n
40、either of the previous tests is satisfied. BSISO/IEC154761:20022IS/OIE67451 C-1:002(2)E I SO/IE2002 C All irthgs serervde 32.2 Output conformance Output conformance for a specific CollectableMetaObject is determined by applying the following test: For the product being tested, a set of meta-data tha
41、t includes all possible meanings and structures representable in that product is exported. Then the meta-data that has been exported is examined. The following options exist for the relation between the products meta-data and the exported (CDIF) meta-data: For a specific CollectableMetaObject: 1 The
42、 product is output conformant if all of the meaning and structure for the specific CollectableMetaObject has been represented as meta-data in the product and has been exported as one or more instances of that CollectableMetaObject. If the CollectableMetaObject is a meta-attribute, the correct value
43、of the meta-attribute has been exported. 2 The product is output morphing conformant if each instance of meta-data in the product that has the same meaning and structure as the CollectableMetaObject has been exported, but some instances have been exported as a different CollectableMetaObject or some
44、 of the meaning and structure has been changed. 3 If the product does not represent the meaning and structure associated with the CollectableMetaObject, output conformance for that CollectableMetaObject is not applicable to the product. 4 In all other cases, the product is not output conformant for
45、that CollectableMetaObject. 2.3 Round-trip conformance Round-trip conformance for a specific 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 t
46、he meta-data is exported again. The following options exist for the relation between the input meta-data and the output meta-data: For a specific CollectableMetaObject: 1 The product is round-trip conformant if the meaning and structure of each instance of the CollectableMetaObject is preserved with
47、out changes during the round-trip. For a vendor to claim round-trip conformance, it is also necessary for the tool to be able to perform create, read, update, and delete operations on the imported (product) meta-data corresponding to the instances of the CollectableMetaObject. 2 The product is round
48、-trip morphing conformant if each instance of the input CollectableMetaObject is preserved, but with some changes in meaning and/or structure. If the CollectableMetaObject is a meta-entity or meta- relationship, some of its instances structural relationships to other CollectableMetaObjects have chan
49、ged, or some instances have been transformed into other CollectableMetaObjects, or instances of other CollectableMetaObjects have been transformed into instances of the CollectableMetaObject. If the CollectableMetaObject is a meta-attribute, the values of some instances of the meta-attribute have changed or the domain of the meta-attribute has changed. 3 In all other cases, the product
