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Databases and The Grid

Lookup NU author(s): Professor Paul WatsonORCiD



This paper examines how databases can be integrated into the Grid. At the time of writing, most existing and proposed Grid applications are file-based. Consequently, there has been little work on how databases can be made available on the Grid for access by distributed applications. Therefore, this paper investigates the requirements of Grid-enabled databases and considers how these requirements are met by existing Grid middleware. This shows that support is currently very limited, and so the paper goes on to propose a service-based architecture to meet the requirements. In this architecture, database systems are wrapped within a Grid-enabled service interface that simplifies the task of building applications to access their contents. The ability to federate data from multiple databases is likely to be a very powerful facility for Grid users wishing to collate and analyse information distributed over the Grid. The paper proposes a framework for federating database servers over the Grid, in which service federation middleware connects to the service interfaces of the set of database systems to be federated, and creates a ôVirtual database systemö. This presents the same service interface to applications as do the individual, un-federated, database systems, so avoiding the need for applications to interface directly to a set of database systems and implement the federation functionality within the application. While the paper focuses on federating database systems, it also argues that the service-based approach will simplify the task of integrating databases with file-based data on the Grid, where that is required.

Publication metadata

Author(s): Watson P

Publication type: Report

Publication status: Published

Series Title: Department of Computing Science Technical Report Series

Year: 2002

Pages: 16

Report Number: 755

Institution: Department of Computing Science, University of Newcastle upon Tyne

Place Published: Newcastle upon Tyne