【摘要】 基于三维CAD应用中复杂数据结构和其它信息的研究，提出了数据库应用程序接口系统层次化的体系结构和数据储存驱动的概念,并定义了三种持久数据模式的类型，来建立零件和装配件之间的关系模式。通过这种方法可以有效地存储和读取CAD应用数据,保持数据的一致性和连续性。更多还原

【Abstract】 Research on complex data structure and other information basedon the application data of 3-D CAD, conception of layered structure system of Data base application program interface and data storage driver are constructed. Defining three kinds of persistent data mode in order to construct mode of relation between parts and assemble. The CAD application data can be stored and read availably. The consistence and sequence of data can be keeped with this approach.更多还原