【摘要】 产品信息及其相关过程的复杂性是产品数据管理的难点所在。本文根据产品数据环境这一特点，提出数据对象、对象关系以及处理数据的过程是产品数据管理的核心内容。研究了产品数据对象间关系的描述方法，引入对象生命周期法的概念，深入分析了对象生命周期法及过程描述法的区别，并给出了将二者结合起来共同描述产品数据动态性的方法。更多还原

【Abstract】 The key task of product data management is to manage the complexity of information and its related processes. According to the characteristics of real data environment, this paper presents a kernel information model containing product data object, object relationship and the processes used to handle data. The description of data relationship is given in detail. Also, the concept of object lifecycle is introduced. Based on the deep analyses on the distinction between the object lifecycle and the process, the two methods are integrated, which gives a new way to descript the dynamic aspect of product data.更多还原