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《CHINESE JOURNAL OF COMPUTERS》 1999-02
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VISUAL QUERY LANGUAGE CQL FOR SPATIAL DATABASE

JU Shi Guang (Department of Computer, Jiangsu University of Science and Technology, Zhenjiang 212013) (State Key Laboratory for Novel Software Technology, Nanjing University, Nanjing 210093)  
This paper proposes a visual query language CQL for spatial database from syntax, semantics and usage. The language allows the end user to retrieve visually entities in a spatial database by means of a card visual element. A query sentence is expressed by a combination of cards. For manipulating the representation of query results, this paper offers various possibly co existing modes: graphical, text and temporary object.
【CateGory Index】: TP312
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【References】
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【Co-references】
Chinese Journal Full-text Database 10 Hits
1 Ma Jun Ju Shiguang Shao Xuejun Li Xingyi (School of Computer,JiangSu University,Zhenjiang,Jiangsu212013);The Design and Implementation of Access Rules for Spatial Database Vista[J];计算机工程与应用;2003-22
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