Publication Type

Conference Paper

Version

submittedVersion

Publication Date

5-1997

Abstract

We introduce a multidatabase model to represent the information that derives from different local databases. This model, known as Tuple-Source (TS) relational model, accommodates tuples from different local databases by attaching them with their source information in the global relations which are also known as TS-relations. In other words, a source attribute is implicit in every TS-relation. To manipulate the global relations, we have developed the TSSQL query language and implemented a distributed query processor to process such queries. In this paper, we report our distributed query processing architecture and algorithms. Our architecture consists of a query mediator and a number of query agents, one for each local database. By encapsulating the heterogeneous query interfaces to different local databases within the query agents, we allow a generic query processing strategy to be adopted by the query mediator. Our approach further ensures that local autonomy is preserved.

Discipline

Databases and Information Systems | Numerical Analysis and Scientific Computing

Publication

International CAiSE97 Workshop: Engineering Federated Database Systems

First Page

69

Last Page

80

City or Country

Vancouver, B.C. Canada

Additional URL

http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.56.5170

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