Research problems in data warehousing
CIKM '95 Proceedings of the fourth international conference on Information and knowledge management
The TSIMMIS Approach to Mediation: Data Models and Languages
Journal of Intelligent Information Systems - Special issue: next generation information technologies and systems
Querying multimedia data from multiple repositories by content: the Garlic project
Proceedings of the third IFIP WG2.6 working conference on Visual database systems 3 (VDB-3)
Your mediators need data conversion!
SIGMOD '98 Proceedings of the 1998 ACM SIGMOD international conference on Management of data
MOCHA: a self-extensible database middleware system for distributed data sources
SIGMOD '00 Proceedings of the 2000 ACM SIGMOD international conference on Management of data
Scaling Access to Heterogeneous Data Sources with DISCO
IEEE Transactions on Knowledge and Data Engineering
Don't Scrap It, Wrap It! A Wrapper Architecture for Legacy Data Sources
VLDB '97 Proceedings of the 23rd International Conference on Very Large Data Bases
Active XML: peer-to-peer data and web services integration
VLDB '02 Proceedings of the 28th international conference on Very Large Data Bases
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Complex applications require integration systems that access data locally or on the Web while being capable to exploit and complete the various capabilities available at integrated resources. In scientific applications such as biomedical, engineering or geographical, information systems (IS) are highly heterogeneous: they differ by their data representation and by their radically different query languages. Therefore, in addition to the common problem of data integration, provided scientific query languages shall also be integrated. In this paper we propose an approach that not only focuses on the data integration, but also addresses the integration of query capabilities available at the sources. An IS may provide a query capability inexistent at another IS, whereas two query capabilities may be similar but with slightly different semantics. We introduce the notion of derived wrapper that captures additional query capabilities to either compensate capabilities lacking at a source, or to adjust an existing capability in order to make it homogeneous with other similar capabilities, wrapped at other sources. The use of derived wrappers extends traditional mediation approaches.