### Interoperability of multiple autonomous databasesInteroperability of multiple autonomous databases

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 Author Litwin, Witold ♦ Mark, Leo ♦ Roussopoulos, Nick Source ACM Digital Library Content type Text Publisher Association for Computing Machinery (ACM) File Format PDF Copyright Year ©1990 Language English
 Subject Domain (in DDC) Computer science, information & general works ♦ Data processing & computer science Abstract Database systems were a solution to the problem of shared access to heterogeneous files created by multiple autonomous applications in a centralized environment. To make data usage easier, the files were replaced by a globally integrated database. To a large extent, the idea was successful, and many databases are now accessible through local and long-haul networks. Unavoidably, users now need shared access to multiple autonomous databases. The question is what the corresponding methodology should be. Should one reapply the database approach to create globally integrated distributed database systems or should a new approach be introduced?We argue for a new approach to solving such data management system problems, called $\textit{multidatabase}$ or $\textit{federated}$ systems. These systems make databases interoperable, that is, usable without a globally integrated schema. They preserve the autonomy of each database yet support shared access.Systems of this type will be of major importance in the future. This paper first discusses why this is the case. Then, it presents methodologies for their design. It further shows that major commerical relational database systems are evolving toward multidatabase systems. The paper discusses their capabilities and limitations, presents and discusses a set of prototypes, and, finally, presents some current research issues. ISSN 03600300 Age Range 18 to 22 years ♦ above 22 year Educational Use Research Education Level UG and PG Learning Resource Type Article Publisher Date 1990-09-01 Publisher Place New York e-ISSN 15577341 Journal ACM Computing Surveys (CSUR) Volume Number 22 Issue Number 3 Page Count 27 Starting Page 267 Ending Page 293

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Source: ACM Digital Library