ISO/IEC 15476-4:2005 情報技術— CDIFセマンティックメタモデル—パート4：データモデル | ページ 2

4.1 他の国際規格から

4.1.1 ISO/IEC 15474-1

ISO/IEC 15476 のこの部分では、ISO/IEC 15474-1 で定義されている次の用語を使用しています。

CDIF

標準の CDIF ファミリー

CDIF セマンティック メタモデル

CDIFメタメタモデル

CDIF転送

実例

メタ属性

メタ エンティティ

メタモデル

メタオブジェクト

メタ関係

モデル

主題分野

移行

転送フォーマット

4.1.2 ISO/IEC 13238-1

ISO/IEC 15476 のこの部分では、ISO/IEC 13238-1 の次の用語を使用しています。

輸出業者

輸入業者

Foreword

ISO (the International Organization for Standardization) 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 organization 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, ISO 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, 2.

The main task of the joint technical committee is to prepare International Standards. Draft International Standards adopted 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 document may be the subject of patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights.

ISO/IEC 15476-4 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 general title Information technology — CDIF semantic metamodel:

• Part 1: Foundation
• Part 2: Common
• Part 3: Data definitions
• Part 4: Data models
• Part 5: Data flow models
• Part 6: State/event models

Introduction

This International Standard will assist the vendors and users of modelling tools and meta-data repositories in developing mechanisms for interchanging information. This International Standard specifies an element of a family of related International Standards. When used together, these International Standards specify a mechanism for transferring information between tools.

ISO/IEC 15474-1:2002, Information technology — CDIF framework — 1: Overview and ISO/IEC 15474-2:2002, Information technology — CDIF framework — 2: Modelling and extensibility should be read first when initially exploring CDIF. The first explains the overall CDIF architecture 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 International Standard explains the Data models subject area. The CDIF semantic metamodel is used to ensure that the information held by tools communicating using CDIF is transferred with an agreed meaning. It covers the information required to express Entity-Relationship-Attribute Modelling and Logical Database Design concepts.

This International Standard has been developed with the wide support and participation of vendors, users, 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.

• Clause 1 to 5 are prescribed ISO/IEC Clauses;
• Clause 6: Subject 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 subject area, and the formal reference to those used, but not defined in the subject area.

This document is intended to be used by anyone wishing to understand and/or use CDIF. 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, Information technology — CDIF framework — 1: Overview, and the framework document ISO/IEC 15474-2:2002, Information technology — CDIF framework — 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 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.

1 Scope

The CDIF family of International Standards is primarily 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 transfer 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 International Standards which form the complete family of CDIF standards are documented in ISO/IEC 15474-1. These International Standards cover the overall framework, the transfer format and the CDIF semantic metamodel.

The diagram in Figure 1 depicts the various International Standards that comprise the CDIF family of standards. The shaded box depicts this Standard and its position in the CDIF family of standards.

This International Standard defines the portion of the CDIF semantic metamodel that supports general Data Modelling. This includes Entity-Relationship-Attribute Modelling as well as Logical Database Design.

3 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 amendments) applies.

4 Terms and definitions

For the purposes of this document, the following definitions apply. Unless otherwise noted, the definitions are specific to this International Standard.

4.1.3 For this International Standard

For the purpose of this part of ISO/IEC 15476 new terms are defined when introduced. Double quotes are used to introduce new terms (e.g.,"model layer")