Non first normal form relations: An algebra allowing data restructuring
Journal of Computer and System Sciences
A comparative analysis of methodologies for database schema integration
ACM Computing Surveys (CSUR)
An object-oriented query algebra
Data Engineering
Abstract data type semantics for many-sorted query algebras
MFDBS 91 Proceedings of the 3rd symposium on Mathematical fundamentals of database and knowledge base systems
Relations with relation names as arguments: algebra and calculus
PODS '92 Proceedings of the eleventh ACM SIGACT-SIGMOD-SIGART symposium on Principles of database systems
Using semantic values to facilitate interoperability among heterogeneous information systems
ACM Transactions on Database Systems (TODS)
On resolving schematic heterogeneity in multidatabase systems
Modern database systems
Schema architecture of the UniSQL/M multidatabase system
Modern database systems
Object orientation in multidatabase systems
ACM Computing Surveys (CSUR)
The TSIMMIS Approach to Mediation: Data Models and Languages
Journal of Intelligent Information Systems - Special issue: next generation information technologies and systems
Your mediators need data conversion!
SIGMOD '98 Proceedings of the 1998 ACM SIGMOD international conference on Management of data
Using schematically heterogeneous structures
SIGMOD '98 Proceedings of the 1998 ACM SIGMOD international conference on Management of data
SIGMOD '98 Proceedings of the 1998 ACM SIGMOD international conference on Management of data
SIGMOD '99 Proceedings of the 1999 ACM SIGMOD international conference on Management of data
Tuple source relational model: a source-aware data model for multidatabases
Data & Knowledge Engineering
A relational algebra for data/metadata integration in a federated database system
Proceedings of the tenth international conference on Information and knowledge management
Logic-based techniques in data integration
Logic-based artificial intelligence
Remarks on the algebra of non first normal form relations
PODS '82 Proceedings of the 1st ACM SIGACT-SIGMOD symposium on Principles of database systems
Model independent assertions for integration of heterogeneous schemas
The VLDB Journal — The International Journal on Very Large Data Bases
Query languages for relational multidatabases
The VLDB Journal — The International Journal on Very Large Data Bases
Entity Identification in Database Integration
Proceedings of the Ninth International Conference on Data Engineering
Resolving Attribute Incompatibility in Database Integration: An Evidential Reasoning Approach
Proceedings of the Tenth 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
Heterogeneous Database Query Optimization in DB2 Universal DataJoiner
VLDB '98 Proceedings of the 24rd International Conference on Very Large Data Bases
Using Schema Matching to Simplify Heterogeneous Data Translation
VLDB '98 Proceedings of the 24rd International Conference on Very Large Data Bases
Declarative Data Cleaning: Language, Model, and Algorithms
Proceedings of the 27th International Conference on Very Large Data Bases
Potter's Wheel: An Interactive Data Cleaning System
Proceedings of the 27th International Conference on Very Large Data Bases
Querying Heterogeneous Information Sources Using Source Descriptions
VLDB '96 Proceedings of the 22th International Conference on Very Large Data Bases
Object Fusion in Mediator Systems
VLDB '96 Proceedings of the 22th International Conference on Very Large Data Bases
SchemaSQL - A Language for Interoperability in Relational Multi-Database Systems
VLDB '96 Proceedings of the 22th International Conference on Very Large Data Bases
A Data Preparation Framework based on a Multidatabase Language
IDEAS '01 Proceedings of the International Database Engineering & Applications Symposium
A Global Object Model for Accommodating Instance Heterogeneities
ER '98 Proceedings of the 17th International Conference on Conceptual Modeling
A Polygen Model for Heterogeneous Database Systems: The Source Tagging Perspective
VLDB '90 Proceedings of the 16th International Conference on Very Large Data Bases
Overcoming Schematic Discrepancies in Interoperable Databases
Proceedings of the IFIP WG 2.6 Database Semantics Conference on Interoperable Database Systems (DS-5)
Answering queries using views: A survey
The VLDB Journal — The International Journal on Very Large Data Bases
Conflict Tolerant Queries in AURORA
COOPIS '99 Proceedings of the Fourth IECIS International Conference on Cooperative Information Systems
A Schema Analysis and Reconciliation Tool Environment for Heterogeneous Databases
IDEAS '99 Proceedings of the 1999 International Symposium on Database Engineering & Applications
Query-by-example: a data base language
IBM Systems Journal
Information Systems - Special issue: Data quality in cooperative information systems
Electronic Notes in Theoretical Computer Science (ENTCS)
The ESTEEM platform: enabling P2P semantic collaboration through emerging collective knowledge
Journal of Intelligent Information Systems
Polymorphic queries for P2P systems
Information Systems
Semantic data integration in a newspaper content management system
OTM'06 Proceedings of the 2006 international conference on On the Move to Meaningful Internet Systems: AWeSOMe, CAMS, COMINF, IS, KSinBIT, MIOS-CIAO, MONET - Volume Part I
Incrementally improving dataspaces based on user feedback
Information Systems
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The integration of heterogeneous databases affects two main problems: schema integration and instance integration. At both levels a mapping from local elements to global elements is specified and various conflicts caused by the heterogeneity of the sources have to be resolved. For the detection and resolution of instance-level conflicts we propose an interactive, example-driven approach The basic idea is to combine an interactive query tool similar to query-by-example with facilities for defining and applying integration operations. This integration approach is supported by a multidatabase query language, which provides special mechanisms for conflict resolution. The foundations of these mechanisms are introduced and their usage in instance integration and reconciliation is presented. In addition, we discuss basic techniques for supporting the detection of instance-level conflicts.