Classifying approaches to semantic heterogeneity in multidatabase systems
Jianchun Zhang · Conference of the Centre for Advanced Studies on Collaborative Research · 1992
A multidatabase system (MDBS) is a collection of preexisting database systems that are autonomous and possibly heterogeneous. The MDBS has developed because of a need to manage and retrieve data from multiple databases within a single application. In this paper, a classification of multidatabases, their corresponding architectures, and their methods for dealing with heterogeneity are proposed. Through the detailed examples, we argue that the methodologies used multidatabase systems to solve schema conflicts and determine semantic equivalences among different objects should be application-dependent.