Heterogeneous Data Source Integration and Evolution
DEXA '02 Proceedings of the 13th International Conference on Database and Expert Systems Applications
Defining and Using Schematic Correspondences for Automatically Generating Schema Mappings
CAiSE '09 Proceedings of the 21st International Conference on Advanced Information Systems Engineering
Leveraging query logs for schema mapping generation in U-MAP
Proceedings of the 2011 ACM SIGMOD International Conference on Management of data
Mapping discovery for XML data integration
OTM'05 Proceedings of the 2005 Confederated international conference on On the Move to Meaningful Internet Systems - Volume >Part I
Maintaining Mappings between Conceptual Models and Relational Schemas
Journal of Database Management
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A Multi-Source Information System is composed of a set of independent data sources and a set of views defined as queries over these data sources. This problem is dramatically increased in evolving information systems, such as data warehouses and web systems, where several views are daily defined or modified by users who are not aware of the detailed metadata describing data sources and their inter-relationships. The purpose of this paper is to propose a design aid which helps in the definition of a user view (or query) from its schema and some integrity constraints. Our approach defines a solution space which provides the set of potential queries that correspond to the user view. The approach is based on the existence of metadata describing individual sources, on semantic assertions describing inter-source similarities between concepts, and on some heuristics which reduce the size of the solution space.