【摘要】 本文叙述了一个面向ＣＩＭＳ的工程数据库管理系统。该系统引入了面向对象的概念和方法，以关系数据库管理系统ＯＲＡＣＬＥ为基础，并与图形软件ＧＫＳ集成，使它具有支持抽象数据类型，类层次和继承性，复杂对象管理，图形数据和非图形数据统一操作，版本管理和长事务处理等能力。文中着重叙述了面向对象的工程数据模型ＯＥＤＭ，系统的体系结构，功能模块和ＯＳＱＬ语言。更多还原

【Abstract】 This paper describes a CIMS-Oriented Engineering Database Management System. The object-oriented notions and methods are introduced to this system. It is established on the basis of RDBMS ORACLE and integrated with the graphical software GKS. As a result, it possesses abilities to support abstract data type, class hierarchy and inheritance between them, complex object management, uniform manipulation for graphical and non-graphical data, version management and long transation processing and diversified interface. The paper lays emphasis on Object-Oriented Engineering Data Model (OEDM), the architecture and the modules of the system and OSQL implementation.更多还原