The Community for Technology Leaders
RSS Icon
Subscribe
Issue No.07 - July (1987 vol.13)
pp: 785-798
A. Motro , Department of Computer Science, University of Southern California
ABSTRACT
An important advantage of a database system is that it provides each application with a custom view of the data. The issue addressed in this paper is how to provide such custom views to applications that access multiple databases. The paper describes a formal method that generates such superviews, in an interactive process of schema editing operations. A mapping of the superview into the individual databases is derived from the editing process, and is stored together with the superview as a virtual database. When this database is interrogated, the mapping is used to decompose each query into a set of queries against the individual databases, and recompose the answers to form an answer to the original query. As this process is transparent to the user, virtual databases may be regarded as a more general type of databases. A prototype database system, that allows users to construct virtual databases and interrogate them, has been developed.
INDEX TERMS
virtual database, Database, database integration, database view, multidatabase environment, query mapping, superview
CITATION
A. Motro, "Superviews: Virtual Integration of Multiple Databases", IEEE Transactions on Software Engineering, vol.13, no. 7, pp. 785-798, July 1987, doi:10.1109/TSE.1987.233490
17 ms
(Ver 2.0)

Marketing Automation Platform Marketing Automation Tool