Experiences with EDO: an evolutionary database optimizer
Data & Knowledge Engineering
The TSIMMIS Approach to Mediation: Data Models and Languages
Journal of Intelligent Information Systems - Special issue: next generation information technologies and systems
A general formal framework for schema transformation
Data & Knowledge Engineering - Special issue on ER '97
InterViso: dealing with the complexity of federated database access
The VLDB Journal — The International Journal on Very Large Data Bases
WOL: A Language for Database Transformations and Constraints
ICDE '97 Proceedings of the Thirteenth International Conference on 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
Answering XML Queries on Heterogeneous Data Sources
Proceedings of the 27th International Conference on Very Large Data Bases
The AutoMed Schema Integration Repository
BNCOD 19 Proceedings of the 19th British National Conference on Databases: Advances in Databases
Schema Evolution in Heterogeneous Database Architectures, A Schema Transformation Approach
CAiSE '02 Proceedings of the 14th International Conference on Advanced Information Systems Engineering
Database Schema Transformation and Optimization
OOER '95 Proceedings of the 14th International Conference on Object-Oriented and Entity-Relationship Modelling
Schema Transformation Processors for Federated Objectbases
Proceedings of the 3rd International Conference on Database Systems for Advanced Applications (DASFAA)
Comparing and transforming between data models via an intermediate hypergraph data model
Journal on Data Semantics IV
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AutoMed is a database integration system that is designed to support the integration of schemas expressed in a variety of high-level conceptual modelling languages. It is based on the idea of expressing transformations of schemas as a sequence of primitive transformation steps, each of which is a bi-directional mapping between schemas. To become an efficient schema integration system in practice, where the number and size of schemas involved in the integration may be very large, the amount of time spent on the evaluation of transformations must be reduced to a minimal level. It is also important that the integrity of a set of transformations is maintained during the process of transformation optimisation. This paper discusses a new representation of schema transformations which facilitates the verification of the well-formedness of transformation sequences, and the optimisation of transformation sequences.