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《Acta Scientiarum Naturalium Universitatis Sunyatseni》 2001-02
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A Research on Optimization of Multi-join Queries

PENG Jian_ping 1,WANG Bian_qin 2 (1.School of Management,Zhongshan University, Guangzhou 510275,China; 2.School of Information and Technology,Zhongshan University, Guangzhou 510275,China)  
On the basis of the given condition,it is shown that the global optimization algorithm can apply to equi_join or nonequi_join and has nothing to do with the estimation model of the join_later size in muti_join queries,and that for star queries, the algorithm can produce join sequences with the following global optimization property.In the join sequence, arbitrary subsequence formed by three neighboring joins is optimum.
【CateGory Index】: TP311.132
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