This paper describes several distributed query processing and optimization techniques useful for achieving efficiency in a hierarchically structured hardware and software architecture. The query optimization techniques take into consideration data flow and pipelining query processing strategies and data distribution...
Distributed Query Optimization;Distributed Querying Definition A distributed query is a kind of database query that interrogates multiple databases. These can be colocated (typically for performance), or distributed across geographically separate locations (typically used for data integration). Each componen...
Larson. Global Query Processing and Optimization in the CORDS Multi- database System. Int. Conf. on Parallel and Distributed Computing Systems, 640-647, ... Per-ke Larson,Z Qiang - International Conference on Parallel & Distributed Computing Systems 被引量: 41发表: 1996年 Distributed Query Opti...
Distributed optimization refers to the process of solving an optimization problem in a decentralized manner, where multiple entities collaborate to achieve an optimal solution. It involves the use of techniques such as dual decomposition, alternate direction method of multipliers (ADMM), and consensus-ba...
Query processing over data stream has attracted much attention in real-time applications. While many efforts have been paid for query processing of data streams in distributed environment, no previous study focused on multiple-query optimization. To address this problem, we propose EsperDist, a ...
Query optimization.To optimize query performance across the distributed data, distributed SQL databases use techniques such as query routing and query planning. Query routing determines which node is responsible for processing a query, while query planning determines the most efficient way to execute the...
Bamnote," Fuzzy logic based query optimization in distributed database", International journal of innovative research in computer and communication engineering", Vol.1, Iss.2, April 2013. pp. 422 - 426.A. Raipurkar and G. Bamnote, "Fuzzy logic based query optimization in distributed database...
Gateways supports multibyte character sets, and will translate character sets between a non-Oracle system and the Oracle server. Global query optimization. Cardinality and indexes on tables at the non-Oracle system are taken into account by the Oracle query optimizer and decomposed to produce effici...
Domain-specific semijoin: A new operation for distributed query processing Many query optimization algorithms proposed for fragmented databases apply semijoins to reduce the size of the fragments of joining relations before they a... JSJ Chen,VOK Li - 《Information Sciences》 被引量: 13发表: 1990...
We perform a complexity analysis to deliver quantitative insights into the advantages of operator fusion, considering various data and model dimensions. Furthermore, we extensively evaluate linear algebra query processing and operator fusion utilizing the widely-used Star Schema and TPC-DI benchmarks. ...