Graceful database schema evolution: the PRISM workbench
Proceedings of the VLDB Endowment
Managing the History of Metadata in Support for DB Archiving and Schema Evolution
ER '08 Proceedings of the ER 2008 Workshops (CMLSA, ECDM, FP-UML, M2AS, RIGiM, SeCoGIS, WISM) on Advances in Conceptual Modeling: Challenges and Opportunities
Collecting Community-Based Mappings in an Ontology Repository
ISWC '08 Proceedings of the 7th International Conference on The Semantic Web
Ten Challenges for Ontology Matching
OTM '08 Proceedings of the OTM 2008 Confederated International Conferences, CoopIS, DOA, GADA, IS, and ODBASE 2008. Part II on On the Move to Meaningful Internet Systems
Generic schema mappings for composition and query answering
Data & Knowledge Engineering
Reverse data exchange: coping with nulls
Proceedings of the twenty-eighth ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
Normalization and optimization of schema mappings
Proceedings of the VLDB Endowment
Ontology and Schema Evolution in Data Integration: Review and Assessment
OTM '09 Proceedings of the Confederated International Conferences, CoopIS, DOA, IS, and ODBASE 2009 on On the Move to Meaningful Internet Systems: Part II
Composition and inversion of schema mappings
ACM SIGMOD Record
FORUM: a flexible data integration system based on data semantics
ACM SIGMOD Record
Update rewriting and integrity constraint maintenance in a schema evolution support system: PRISM++
Proceedings of the VLDB Endowment
Reverse data exchange: Coping with nulls
ACM Transactions on Database Systems (TODS)
Normalization and optimization of schema mappings
The VLDB Journal — The International Journal on Very Large Data Bases
Designing and refining schema mappings via data examples
Proceedings of the 2011 ACM SIGMOD International Conference on Management of data
Simplifying model transformation chains by rule composition
MODELS'10 Proceedings of the 2010 international conference on Models in software engineering
Proceedings of the 15th International Conference on Database Theory
Semantic flow networks: semantic interoperability in networks of ontologies
JIST'11 Proceedings of the 2011 joint international conference on The Semantic Web
Automating the database schema evolution process
The VLDB Journal — The International Journal on Very Large Data Bases
Schema mappings and data examples
Proceedings of the 16th International Conference on Extending Database Technology
Value invention in data exchange
Proceedings of the 2013 ACM SIGMOD International Conference on Management of Data
ACM Transactions on Database Systems (TODS) - Invited papers issue
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Mapping composition is a fundamental operation in metadata driven applications. Given a mapping over schemas 驴1 and 驴2 and a mapping over schemas 驴2 and 驴3, the composition problem is to compute an equivalent mapping over 驴1 and 驴3. We describe a new composition algorithm that targets practical applications. It incorporates view unfolding. It eliminates as many 驴2 symbols as possible, even if not all can be eliminated. It covers constraints expressed using arbitrary monotone relational operators and, to a lesser extent, non-monotone operators. And it introduces the new technique of left composition. We describe our implementation, explain how to extend it to support user-defined operators, and present experimental results which validate its effectiveness.