Abstract: There are lots of non-structured technical documents in the product life cycle, which require PDM systems to process in fine granularity. The paper applies XML standard in order to keep the consistant formal expression for product documents. The 4-tier distributed model discussed in thc paper resolves the problems of storing and accessing the data in PDM system, and makes product documents be browsed by Web system at element level.

摘要： 在产品生命周期中存在着大量非结构化的产品文档，作为CIMS信息集成主体的PDM系统存在着数据粒度过大的问题。XML语言的出现很好地解决了非结构化产品文档表达一致化的问题．提出的4层分布式系统模型致力于解决PDM系统中数据存储和访问中的难题，使XML产品文档在web上的浏览达到元素级的水平。

关键词: 扩展性标记语言, 元素级, 4层分布式, 移动代理

CLC Number: 

• TP393