信息技术.CDIF语义元模型.第1部分:创建

[中文适用范围]： CDIF 系列标准主要设计用于描述在建模工具之间传输信息的机制。 当导入和导出工具的作者除了遵守 CDIF 的协议之外没有任何共同点时，它有助于成功转移。 为传输格式定义的语言也可用作从存储库导入/导出的通用语言。 为 CASE 定义的 CDIF 语义元模型也适用于作为存储库中使用的标准定义的基础。 构成完整 CDIF 标准系列的标准记录在 ISO/IEC 15474-1:2002，信息技术 — CDIF 框架 — 第 1 部分：概述中。 这些标准涵盖了总体框架、传输格式和CDIF语义元模型。 图 1 中的图表描述了组成 CDIF 标准系列的各种标准。 阴影框描述了该标准及其在 CDIF 标准系列中的位置。 该标准定义了 CDIF 语义元模型的基础主题领域。 该主题区域包含所有其他对象（包括使用可扩展性定义的对象）必须基于的基本对象。 本文档旨在供任何希望了解和/或使用 CDIF 的人使用。 本文档提供了 CDIF 语义元模型的单个主题区域的定义。 它适合： ——评估 CDIF 的人员， — 希望了解 CDIF 转让的原则和概念的人员，以及 — 发展中的进口商和出口商。 文件 ISO/IEC 15474-1:2002，信息技术 — CDIF 框架 — 第 1 部分：概述，以及框架文件 ISO/IEC 15474-2:2002，信息技术 — CDIF 框架 — 第 2 部分：建模和可扩展性，应在最初探索 CDIF 时以及尝试阅读 CDIF 标准系列中的其他文档之前，请首先阅读。 虽然阅读本文档没有特定的先决条件，但熟悉以下内容将有助于读者： ——实体-关系-属性建模； ——建模（CASE）工具； ——信息存储库； ——数据字典； ——多个元层建模。 [外文原描述]： The CDIF family of 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 standards which form the complete family of CDIF standards are documented 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. 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. This standard defines the 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 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 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 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.