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《Computer Science》 2008-05
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Mode of Large-scale Subject Database's Subdivision Based on Dependency Relations

LIU Wen-yuan~1 YU Jia-xin~1 XU Li-na~1 CHEN Guo-ying~(1,2) (College of Information Science and Engineering,Yanshan University,Qinhuangdao 066004,China)~1(Department of Information Engineering,Hebei University of Technology,Tianjin 300130,China)~2  
The dependency among subject databases is defined and explained in this paper,and it is fractionated into en- tity dependency and operation dependency,then the subject database dependency relation is measured on this basic. The relative dependency and opposite among subject databases are proposed by which subject database scale can be af- firmed.Finally,the description of subdivision arithmetic is proposed through which large-scale subject database can be subdivided into certain subject databases.The depending degree among subject databases can be reduced and the inter- nal relation of subject database will be kept close simultaneously.So the retrieval efficiency to database will be enhanced greatly and it is advantageous to the subject database's management and maintenance simultaneously.
【Fund】: 国家科技部高新技术计划项目(2005EJ000017);; 国家电子信息发展基金;; 河北省信息产业发展计划项目(2005035025)
【CateGory Index】: TP311.13
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【Secondary References】
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3 FENG Jian-wen~1,LI Feng~2,YU Xiao-chun~1,LU Xi-cong~1 (1.Department of Mathematics and Information Technology,Hanshan Normal University,Chaozhou 521041,China; 2.Network and Educational Technology Center,Hanshan Normal University,Chaozhou 521041,China);The Practice of Campus Smart Card System in Hanshan Normal University[J];Journal of Hanshan Normal University;2010-06
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