Principles of database and knowledge-base systems, Vol. I
Principles of database and knowledge-base systems, Vol. I
ACM Transactions on Database Systems (TODS)
Integration of weighted knowledge bases
Artificial Intelligence
A semantics for reasoning consistently in the presence of inconsistency
Artificial Intelligence
Consistent query answers in inconsistent databases
PODS '99 Proceedings of the eighteenth ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
Foundations of Databases: The Logical Level
Foundations of Databases: The Logical Level
Combining Multiple Knowledge Bases
IEEE Transactions on Knowledge and Data Engineering
Reasoning in Inconsistent Knowledge Bases
IEEE Transactions on Knowledge and Data Engineering
Flexible Relation: An Approach for Integrating Data from Multiple, Possibly Inconsistent Databases
ICDE '95 Proceedings of the Eleventh International Conference on Data Engineering
A Logic Programming Approach to the Integration, Repairing and Querying of Inconsistent Databases
Proceedings of the 17th International Conference on Logic Programming
Data Integration under Integrity Constraints
CAiSE '02 Proceedings of the 14th International Conference on Advanced Information Systems Engineering
Integrating and Managing Conflicting Data
PSI '02 Revised Papers from the 4th International Andrei Ershov Memorial Conference on Perspectives of System Informatics: Akademgorodok, Novosibirsk, Russia
Query Answering in Information Systems with Integrity Constraints
Proceedings of the IFIP TC11 Working Group 11.5, First Working Conference on Integrity and Internal Control in Information Systems: Increasing the confidence in Information Systems
Integrating data from possibly inconsistent databases
COOPIS '96 Proceedings of the First IFCIS International Conference on Cooperative Information Systems
Conflict Tolerant Queries in AURORA
COOPIS '99 Proceedings of the Fourth IECIS International Conference on Cooperative Information Systems
Querying inconsistent databases
LPAR'00 Proceedings of the 7th international conference on Logic for programming and automated reasoning
Semantically correct query answers in the presence of null values
EDBT'06 Proceedings of the 2006 international conference on Current Trends in Database Technology
Towards Relational Inconsistent Databases with Functional Dependencies
KES '08 Proceedings of the 12th international conference on Knowledge-Based Intelligent Information and Engineering Systems, Part II
ACM Computing Surveys (CSUR)
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This paper presents a framework for merging, repairing and querying inconsistent databases in the presence of functional dependencies and foreign key constraints and investigates the problem related to the satisfaction of general integrity constraints in the presence of null values. In more details, the approach consists in i) merging the source databases to reduce the set of tuples inconsistent with respect to the constraints defined by the primary keys, ii) repairing the integrated database with respect to functional dependencies and foreign key constraints, and iii) computing consistent answers over repaired database. This paper presents a system prototype, Rainbow, developed at the University of Calabria, implementing the proposed framework. The system receives in input an integration operator and a query and outputs the answer to the query. The system currently implements many of the integration operators proposed in the literature.