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 te
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...
Based on this, we propose solutions to two of the problems encountered in distributed query processing and optimization on XML data, namely localization and pruning. Localization takes a fragmentation-unaware query plan and converts it to a distributed query plan that can be executed at the sites...
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 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...
Query Issues in Data Integration Systems Data Integration aims to combine distributed information conforming to different data models and provide interfaces for accessing such information in an un... RCN Mbinkeu 被引量: 0发表: 2013年 Introduction to Query Processing and Optimization Query Processing ...
Fast distributed query processing with Shark 热度: Decentralized stochastic optimization based planning of integrated transmission and distribution networks with distributed generation penetration 热度: J.Cent.SouthUniv.(2014)21:190−198 DOI:10.1007/s11771-014-1930-7 ...
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...
This paper considers a multi-query optimization issue for distributed similarity query processing, which attempts to exploit the dependencies in the derivation of a query evaluation plan. To the best of our knowledge, this is the first work investigating a multi- query optimization technique for dist...