Dynamic Query Optimization Approach for Semantic Database Grid

Fundamentally, semantic grid database is about bringing globally distributed databases together in order to coordinate resource sharing and problem solving in which information is given well-defined meaning, and DartGrid II is the implemented database gird system whose goal is to provide a semantic...

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Bibliographic Details
Published inJournal of computer science and technology Vol. 21; no. 4; pp. 597 - 608
Main Authors Zheng, Xiao-Qing, Chen, Hua-Jun, Wu, Zhao-Hui, Mao, Yu-Xin
Format Journal Article
LanguageEnglish
Published Beijing Springer Nature B.V 01.07.2006
Grid Computing Lab, College of Computer Science, Zhejiang University, Hangzhou 310027, P.R. China
Subjects
Algorithms
Data base management systems
Design optimization
Dynamics
Heterogeneity
Mathematical models
Optimization
Problem solving
Queries
Query processing
Relational data bases
Response time (computers)
Semantics
Servers
Studies
semantic database grid
database integration
query optimization
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Summary:Fundamentally, semantic grid database is about bringing globally distributed databases together in order to coordinate resource sharing and problem solving in which information is given well-defined meaning, and DartGrid II is the implemented database gird system whose goal is to provide a semantic solution for integrating database resources on the Web. Although many algorithms have been proposed for optimizing query-processing in order to minimize costs and/or response time, associated with obtaining the answer to query in a distributed database system, database grid query optimization problem is fundamentally different from traditional distributed query optimization. These differences are shown to be the consequences of autonomy and heterogeneity of database nodes in database grid. Therefore, more challenges have arisen for query optimization in database grid than traditional distributed database. Following this observation, the design of a query optimizer in DartGrid II is presented, and a heuristic, dynamic and parallel query optimization approach to processing query in database grid is proposed. A set of semantic tools supporting relational database integration and semantic-based information browsing has also been implemented to realize the above vision.
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ISSN:1000-9000
1860-4749
DOI:10.1007/s11390-006-0597-4