| 工程数据库管理系统及其图形数据库的设计与实现 |
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| 引用本文： | 许永年,方利星,刘新,叶自捷. 工程数据库管理系统及其图形数据库的设计与实现[J]. 华中科技大学学报(自然科学版), 1992, 0(5) |
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| 作者姓名： | 许永年 方利星 刘新 叶自捷 |
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| 作者单位： | 华中理工大学机械工程一系(许永年，方利星，刘新)，华中理工大学机械工程一系(叶自捷) |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 本文论述了工程数据库管理系统(EDBMS)的总体结构、功能及其实现环境.该系统采用关系和网状混合的数据模型,实现了图形数据和非图形数据的统一管理,并具备版本管理及控制、知识库管理等功能.
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| 关 键 词： | 工程数据库 图形数据库 版本管理 图形包 图形数据处理 |
The Design and Realization of an EDBMS and Its Graphical Database |
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| Xu Yongnian Fang Lixing Liu Xin Ye Zijie. The Design and Realization of an EDBMS and Its Graphical Database[J]. JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE, 1992, 0(5) |
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| Authors: | Xu Yongnian Fang Lixing Liu Xin Ye Zijie |
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| Affiliation: | Xu Yongnian Fang Lixing Liu Xin Ye Zijie |
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| Abstract: | This paper deals with some problems of an engineering database management system (EDBMS) developed by the authors. The EDBMS is based on the ORACLE RDBMS. The system consists of a database management system (DBMS), version management, graphical system and knowledge base. Some problems concerning the design of a graphical database in the EDBMS are described, such as the development of graphical data models, the definition of graphical data structures, the storage of the graphical data, the establishment of relationships among graphical data, the processing of non-uniform length records and the management of data, etc. The EDBMS is found to run well and has such advantages as effective functions, high reliability and friendly interface for users. |
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| Keywords: | EDB graphical database version management graphical pack- age graphical data processing |
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