BS ISO 10303-21-1994 工业自动化系统和集成.产品数据表述和交换.执行方法:交换结构的明码电文编码
Industrial automation systems and integration - Product data representation and exchange - Implementation methods - Clear text encoding of the exchange structure
This part of ISO 10303 specifies an exchange structure format using a clear text encoding of product data for which the conceptual model is specified in the EXPRESS language (ISO 10303-11). The file format is suitable for the transfer of product data among computer systems.
The mapping from the EXPRESS language to the syntax of the exchange structure is specified. Any EXPRESS schema can be mapped onto the exchange structure syntax.