描述了用于表示概念模式的语言IDEF1X的语义和语法。描述了两种类型的IDEF1X模型。1.键样式用于生成表示企业内数据结构和语义的信息模型，并与美国政府的联邦信息处理标准（FIPS）PUB 184《信息建模集成定义》（IDEF1X）向后兼容。2.标识样式用于生成表示企业内概念的知识、行为和规则的对象模型。它可以用作关键样式模型的增长路径。在适当的自动化支持下，可以使用identity样式来开发作为目标面向对象系统的可执行原型的模型。

The semantics and syntax of IDEF1X, a language used to represent a conceptual schema, are described. Two styles of IDEF1X model are described. 1. The key style is used to produce information models that represent the structure and semantics of data within an enterprise and is backward-compatible with the US government's Federal Information Processing Standard (FIPS) PUB 184, Integration Definition for Information Modeling (IDEF1X). 2. The identity style is used to produce object models that represent the knowledge, behaviour, and rules of the concepts within an enterprise. It can be used as a growth path for key-style models. The identity style can, with suitable automation support, be used to develop a model that is an executable prototype of the target object-oriented system.