CDIF系列标准主要用于描述一种传输机制 建模工具之间的信息。当导入和 除了符合CDIF的协议之外，导出工具没有任何共同之处。定义的语言 传输格式还具有作为从存储库导入/导出的通用语言的适用性。CDIF 为建模工具定义的语义元模型也具有作为标准定义基础的适用性，用于 存储库。 这些标准构成了CDIF标准的完整系列，记录在ISO/IEC 15474-1:20 02中， 信息技术-CDIF框架-第1部分:概述。这些标准涵盖了总体框架， 传输格式和CDIF语义元模型。图1？在CDIF标准系列中的地位 图1中的图表描述了组成CDIF标准系列的各种标准。阴影框 描述该标准及其在CDIF标准系列中的地位。 本文档描述了用于定义的标准CDIF传输语法的标准CDIF传输编码 在ISO/IEC 15475-2:20 02，信息技术-CDIF传输格式-第2部分:语法。 本文档旨在供任何希望了解和/或使用CDIF的人使用。本文件提供 介绍整个CDIF标准系列。它适用于: -评估CDIF的那些， -希望了解CDIF转让的原则和概念的人，以及 -发展中的进口商和出口商。 文件ISO/IEC 15474-1:20 02，信息技术-CDIF框架-第1部分:概述和 ISO/IEC 15474-2:20 02，信息技术—CDIF框架—第2部分:建模和可扩展性应 首次浏览CDIF时，以及尝试阅读CDIF系列中的其他文档之前，请先阅读 标准。 本文件应与ISO/IEC 15475-1:20 02《信息技术—CDIF传输》一并阅读 格式。第1部分:语法和编码的一般规则和ISO/IEC 15475-2:20 02，信息技术- CDIF传输格式。第2部分:语法。 虽然阅读本文档没有特定的先决条件，但读者熟悉本文档会有所帮助 具有以下内容: -实体-关系-属性建模； -建模（案例）工具； -信息储存库； -数据字典； -多元层建模； -形式语法； -传输格式。

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 modelling tools 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.

Figure 1 ？ Position in the CDIF family of 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. This document describes the standard CDIF Transfer Encoding for the standard CDIF Transfer Syntax as defined in ISO/IEC 15475-2:2002, Information technology —CDIF transfer format — Part 2: Syntax SYNTAX.1. This document is intended to be used by anyone wishing to understand and/or use CDIF. This document provides an introduction to the entire CDIF family of standards. 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 documents 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 and before attempting to read other documents in the CDIF family of standards. This document should be read in conjunction with ISO/IEC 15475-1:2002, Information technology — CDIF transfer format — Part 1: General rules for syntaxes and encodings and ISO/IEC 15475-2:2002, Information technology — CDIF transfer format — Part 2: Syntax SYNTAX.1. 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; — Formal grammars; — Transfer formats.