用于建筑服务的电子产品目录数据结构 第4部分：产品目录的数据字典结构

[中文适用范围]： 本文件规定了建筑服务产品目录所用数据字典的要求，以提供其定义和数据建模的语义。为此，它定义了一个包含以下内容的总体模型： —— 主题种类，允许区分： —— 代表产品目录中产品的产品主题； —— 包含产品目录元数据的目录主题； —— 收集复杂产品特征（包括端口和输入/输出口）属性的各种块； —— 关系类型，允许区分不同类型的关系，如 isSubtypeOf、hasPart 或 hasBlock； —— 属性种类，以区分： —— 通过在产品目录中提供属性值来描述产品的静态属性； —— 描述产品行为的动态属性； —— 代表影响产品行为的外部条件的外部属性，通过影响动态属性的值来实现。 本文件还通过引入字典元级别，描述了将总体模型映射到 ISO 12006-3 的数据字典模型。 最后，为了克服 ISO 16757-5 所依据的标准在捕获产品目录所有方面时的不足，本文件为必需的数据字典元素提供了一些规则和建议。 本文件不描述产品目录必须如何组织，也不描述产品目录交换的任何格式。产品目录在 ISO 16757-5 中描述。 [外文原描述]： This document specifies requirements for data dictionaries that are used by product catalogues for building services to provide the semantics of their definitions and data modelling. For this purpose, it defines an overall model that contains: — subject kinds that allow to distinguish: — product subjects representing products in product catalogues; — catalogue subjects comprising meta data of product catalogues; — various kinds of blocks that collect properties of complex product features, including ports and in/outlets; — relationship types that allow to distinguish between different kinds of relationships like isSubtypeOf, hasPart, or hasBlock; — property kinds to distinguish between: — static properties describing products by providing property values in product catalogues; — dynamic properties that describe the behaviour of products; — external properties that represent external conditions that influence the behaviour of the product by influencing the values of dynamic properties. This document also describes a mapping of the overall model to the data dictionary model of ISO 12006-3 by introducing a dictionary meta level. Finally, to overcome deficiencies of the standards underlying ISO 16757-5 in capturing all aspects of product catalogues, this document provides some rules and recommendations for required data dictionary elements. This document does not describe how product catalogues have to be organized, and it does not describe any formats for the exchange of product catalogues. Product catalogues are described in ISO 16757-5.