A service-oriented system for distributed data querying and integration on Grids

  • Authors:
  • Carmela Comito;Anastasios Gounaris;Rizos Sakellariou;Domenico Talia

  • Affiliations:
  • DEIS, Universita della Calabria, Via P. Bucci, cubo 41 c, 87036 Rende, CS, Italy;Department of Informatics, Aristotle University of Thessaloniki, 541 24, Greece;School of Computer Science, University of Manchester, Oxford Road, Manchester M13 9PL, UK;DEIS, Universita della Calabria, Via P. Bucci, cubo 41 c, 87036 Rende, CS, Italy

  • Venue:
  • Future Generation Computer Systems
  • Year:
  • 2009

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Abstract

Data Grids rely on the coordinated sharing of and interaction across multiple autonomous database management systems. They provide transparent access to heterogeneous and autonomous data resources stored on Grid nodes. Data sharing tools for Grids must include both distributed query processing and data integration functionality. This paper presents the implementation of a data sharing system that (i) is tailored to data Grids, (ii) supports well established and widely spread relational DBMSs, and (iii) adopts a hybrid architecture by relying on a peer model for query reformulation to retrieve semantically equivalent expressions, and on a wrapper-mediator integration model for accessing and querying distributed data sources. The system builds upon the infrastructure provided by the OGSA-DQP distributed query processor and the XMAP query reformulation algorithm. The paper discusses the implementation methodology, and presents empirical evaluation results.