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Design and Realization of Query Processing in Data Stream Management System

XU Chunfeng,SHAO Zhen,LI Weichun(School of computer science and technology,Changchun University of Science and Technology,Changchun 130022)  
Data stream management system is used for managing and query processing in the presence of multiple,con-tinuous,rapid,time-varying data streams.The foundation is to extract,transform,and combine the data,which is the main matter and role to query execute.The paper expounds the design and realization of query executing.including two parts: query operation and query execute schedule.
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