%0 Journal Article
%T A Data Manager for Engineering Applications
%A Zheng Weidong Lin Zongkai Guo Yuchai CAD Laboratory of Institute of Computing Technology
%A Academia Sinica
%A Beijing
%A <br>Zheng Weidong
%A Lin Zongkai
%A Guo Yuchai
%J 计算机科学技术学报
%D 1993
%I 
%X Efficient data management is crucial to the success of a CAD/CAM system.Traditional database systems,designed to deal with only regular and structural data,cannot efficiently manage design data. In this paper,we present a data manager called EDBMS/2,which has been developed by our laboratory for engineering support applications.EDBMS/2 has a data model that combines features of both relational and semantic ones and owns flexible abilities for modeling engineering data,such as variable-length data processing,integrated management of structured data and unstructured data,and composite object handling.Mechanisms based on DBV and DBV graph concepts,proposed in EDBMS/2,make EDBMS/2 own powerful abilities for version management and run efficiently.By now,EDBMS/2 has been used successfully in EDCADS(integrated Electronic Devices CAD environ- ment)project and as a lower level support to develop an object-oriented DBMS for mechanical engineering.
%K Engineering database
%K design object modeling
%K version control<br>CAD
%K CAM
%K 数据管理
%K EDBMS／2
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=F57FEF5FAEE544283F43708D560ABF1B&aid=0EE555B244EF86DBDA6F033A9E1899BA&yid=D418FDC97F7C2EBA&vid=5D311CA918CA9A03&iid=E158A972A605785F&sid=659D3B06EBF534A7&eid=340AC2BF8E7AB4FD&journal_id=1000-9000&journal_name=计算机科学技术学报&referenced_num=1&reference_num=3