© 1997 by British Computer Society
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Impact of Semantic Heterogeneity on Federating Databases
Cooperative Research Centre for Distributed Systems Technology, School of Information Technology, The University of Queensland, Queensland 4072, Australia Email: colomb{at}it.uq.edu.au
The difficult problems in the design of systems which facilitate interoperation and mediation among information sources and their consumers arise from the presence of semantic heterogeneity among the schemas and ontologies supporting the different services. The purpose of this paper is to develop a taxonomy of semantic heterogeneity, and to describe, taking the perspective of text databases, the conditions under which autonomy-respecting interoperation of different kinds are likely to be feasible. The main conclusion is that interoperation can be based on structured database technology only if the participating organizations communicate among themselves, otherwise the considerations underlying text databases dominate the technology used.
Received October 4, 1996. revised August 27, 1997.