Query rewriting for semistructured data
SIGMOD '99 Proceedings of the 1999 ACM SIGMOD international conference on Management of data
Typechecking for XML transformers
PODS '00 Proceedings of the nineteenth ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
DTD inference for views of XML data
PODS '00 Proceedings of the nineteenth ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
Extracting indexing information from XML DTDs
Information Processing Letters
An Approach to the Semi-Automatic Generation of Mediator Specifications
EDBT '00 Proceedings of the 7th International Conference on Extending Database Technology: Advances in Database Technology
Semantic Integration of Heterogeneous XML Data Sources
OOIS '02 Proceedings of the 8th International Conference on Object-Oriented. Information Systems
Inferring DTD to Facilitate User-Oriented XML Document Query
WAIM '00 Proceedings of the First International Conference on Web-Age Information Management
A Grammar Based Model for XML Schema Integration
BNCOD 17 Proceedings of the 17th British National Conferenc on Databases: Advances in Databases
Integrating GIS and Imagery Through XML-Based Information Mediation
ISD '99 Selected Papers from the International Workshop on Integrated Spatial Databases, Digital Inages and GIS
XML query processing using document type definitions
Journal of Systems and Software
Typechecking for XML transformers
Journal of Computer and System Sciences - Special issue on PODS 2000
Database collaboration instead of integration
APCCM '05 Proceedings of the 2nd Asia-Pacific conference on Conceptual modelling - Volume 43
Proceedings of the 16th International Conference on Database Theory
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Mediation is an important application of XML. The MIX mediator uses Document Type Definitions (DTDs) to assist the user in query formulation and query processors in running queries more efficiently.We provide an algorithm for inferring the view DTD from the view definition and the source DTDs. We develop a metric of the quality of the inference algorithm's view DTD by formalizing the notions of soundness and tightness. Intuitively, tightness is similar to precision, i.e., it deteriorates when "many" objects described by the view DTD can never appear as content of the view.In addition we show that DTDs have some inherent deficiencies that prevent the development of tight DTDs. We propose "DTDs with specialization" as a way to resolve this problem.