| 工程数据库管理系统DATFEA的符号对象模型及实现技术 |
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| 引用本文： | 刘秉毅.工程数据库管理系统DATFEA的符号对象模型及实现技术[J].军械工程学院学报,1992(4). |
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| 作者姓名： | 刘秉毅 |
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| 作者单位： | 军械工程学院电工教研室 |
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| 摘 要： | 本文主要论述符号对象模型的形式化定义及DATFEA标识系统的实现技术,文中对COHOR复杂对象模型的属性(域)进行了广义扩展,引入了对象标识、符号值、符号对象、值对象等概念,并讨论了DATFEA的总体结构及符号对象模型的逻辑组织方法。
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| 关 键 词： | CAD 工程数据库 复杂对象 数据模型 对象标识 符号对象模型 |
THE SYMBOLIC OBJECT MODEL AND IMPLEMENTATION TECHNIQUES OF ENGINEERING DATABASE MANAGEMENT SYSTEM(DATFEA) |
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| Liu Bingyi,Teaching and Research Section of Electrical Engineering.THE SYMBOLIC OBJECT MODEL AND IMPLEMENTATION TECHNIQUES OF ENGINEERING DATABASE MANAGEMENT SYSTEM(DATFEA)[J].Journal of Ordnance Engineering College,1992(4). |
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| Authors: | Liu Bingyi Teaching and Research Section of Electrical Engineering |
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| Abstract: | This paper provides readers primarily with formal definitions on the symbolic object model and the implementation techniques about DATFEA identification system. First a generally ex- tended attribute (domain) of COHOR complex object model is given. And then the concepts of object identifying, symbolic value, symbolic object as well as value object are introduced, we end the paper by considering the architecture of DATFEA and the logic organization ap- proach of symbolic object model. |
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| Keywords: | CAD engineering database complex object data model object identifying symbolic object model |
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