Federated database systems for managing distributed, heterogeneous, and autonomous databases
ACM Computing Surveys (CSUR) - Special issue on heterogeneous databases
Toward principles for the design of ontologies used for knowledge sharing
International Journal of Human-Computer Studies - Special issue: the role of formal ontology in the information technology
WordNet: a lexical database for English
Communications of the ACM
Distributed and Parallel Databases
Research and practice in federated information systems
ACM SIGMOD Record
Integrating contents and structure in text retrieval
ACM SIGMOD Record
Formal Ontology in Information Systems: Proceedings of the 1st International Conference June 6-8, 1998, Trento, Italy
Modern Information Retrieval
What Are Ontologies, and Why Do We Need Them?
IEEE Intelligent Systems
Tools for the Design of User Friendly Web Applications
EC-Web 2001 Proceedings of the Second International Conference on Electronic Commerce and Web Technologies
The BLOOM Model Revisited: An Evolution Proposal
Proceedings of the Workshop on Object-Oriented Technology
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This work presents an architecture to federate pre-existing Digital Libraries with documents written in different languages. A user will be able to ask queries to all the federated Digital Libraries using a unique and friendly user interface that will be generated in the language she chooses among the available ones. The query will be executed over all the relevant databases in the system no matter which language their documents are written in. The query will be automatically translated if it is necessary. This architecture is based on ontologies, which are used not only to represent the global schema but also to guide the execution of software modules in the system; it also includes three dictionaries to solve the inter-language barriers.