Results 1 to 10 of about 34,745 (166)
A technique for parallel query optimization using MapReduce framework and a semantic-based clustering method [PDF]
PeerJ Computer Science, 2021 Query optimization is the process of identifying the best Query Execution Plan (QEP). The query optimizer produces a close to optimal QEP for the given queries based on the minimum resource usage.
Elham Azhir +4 more
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Query Optimization for Distributed Spatio-Temporal Sensing Data Processing [PDF]
Sensors, 2022 The unprecedented development of Internet of Things (IoT) technology produces humongous amounts of spatio-temporal sensing data with various geometry types.
Xin Li +3 more
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DISTRIBUTED QUERY OPTIMIZATION [PDF]
Analele Universităţii Constantin Brâncuşi din Târgu Jiu : Seria Economie, 2010 The need for the distributed systems has been determined by the type of business developed by companies with offices geographically distributed where the specific organizational structure promotes a decentralized business model.
Nicoleta IACOB
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Graph Query Processing Technology Based on Data Warehouse [PDF]
Jisuanji gongcheng, 2023 The maturity of technologies such as vectorization provides an opportunity to realize graph queries based on a data warehouse.However, the existing system does not consider the characteristics of columnar storage and queries and fails to efficiently ...
Jiading GUO, Peng WANG
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Twig Query Optimization Based on Partial Evaluation [PDF]
Jisuanji gongcheng, 2016 TreeMatch algorithm is widely considered to be an effective Twig query algorithm.According to the disadvantage of TreeMatch algorithm’s repeated analysis on Twig pattern,partial evaluation technology in the field of compilation is applied,and a Twig ...
GAO Wanchen,LIAO Husheng,SU Hang
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Optimization of correlate subquery based on distributed database
Xibei Gongye Daxue Xuebao, 2021 Subquery is widely used in database. It can be divided into related subquery and non-related subquery according to whether it is dependent on the table of the parent query.
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Query Optimization in an OODBMS [PDF]
, 1993 It is clearly crucial for the success of object—oriented databases to find efficient implementations that improve on the performance of relational systems, rather than being powerful in terms of modeling and features, but just too slow to be used. This paper describes the mapping of COCOON to DASDBS, a nested relational database kernel system, as an ...
Christian Rich, Marc H. Scholl
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Query Refinement into Information Retrieval Systems: An Overview
Journal of Information and Organizational Sciences, 2023 Query, expressing the user need and requirement, has an important role, in an information retrieval system, for reaching a high accuracy search. In this paper, we present an overview of the different refinement operations that the query may undergo, in ...
Mawloud Mosbah
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Optimal Divide and Query [PDF]
, 2011 This work has been partially supported by the Spanish Ministerio de Ciencia e Innovación under grant TIN2008-06622-C03-02 and by the Generalitat Valenciana under grant PROMETEO/2011/052.
David Insa, Josep Silva
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Evolutionary Algorithms for Query Op-timization in Distributed Database Sys-tems: A review
Advances in Distributed Computing and Artificial Intelligence Journal, 2018 Evolutionary Algorithms are bio-inspired optimization problem-solving approaches that exploit principles of biological evolution. , such as natural selection and genetic inheritance.
Zulfiqar ALI +2 more
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