Principles of database and knowledge-base systems, Vol. I
Principles of database and knowledge-base systems, Vol. I
Integrity = validity + completeness
ACM Transactions on Database Systems (TODS)
Proceedings of the 1990 North American conference on Logic programming
Equivalence of datalog queries is undecidable
Journal of Logic Programming
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
ACM Transactions on Database Systems (TODS)
Managing semantic heterogeneity in databases: a theoretical prospective
PODS '97 Proceedings of the sixteenth ACM SIGACT-SIGMOD-SIGART symposium on Principles of database systems
Consistent query answers in inconsistent databases
PODS '99 Proceedings of the eighteenth ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
Information integration using logical views
Theoretical Computer Science - Special issue on the 6th International Conference on Database Theory—ICDT '97
Multidatabase Interoperability
ACM SIGMOD Record
Data integration: a theoretical perspective
Proceedings of the twenty-first 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
Condensed Representation of Database Repairs for Consistent Query Answering
ICDT '03 Proceedings of the 9th International Conference on Database Theory
Queries Independent of Updates
VLDB '93 Proceedings of the 19th International Conference on Very Large Data Bases
Obtaining Complete Answers from Incomplete Databases
VLDB '96 Proceedings of the 22th International Conference on Very Large Data Bases
Data Integration under Integrity Constraints
CAiSE '02 Proceedings of the 14th International Conference on Advanced Information Systems Engineering
Combining Knowledge Bases Consisting of First Order Theories
ISMIS '91 Proceedings of the 6th International Symposium on Methodologies for Intelligent Systems
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
On Indefinite Databases and the Closed World Assumption
Proceedings of the 6th Conference on Automated Deduction
Computing Repairs for Inconsistent Databases
CODAS '01 Proceedings of the Third International Symposium on Cooperative Database Systems for Advanced Applications
Integrating data from possibly inconsistent databases
COOPIS '96 Proceedings of the First IFCIS International Conference on Cooperative Information Systems
Flexible relation: a model for data in distributed, autonomous, and heterogeneous databases
Flexible relation: a model for data in distributed, autonomous, and heterogeneous databases
Querying inconsistent databases
LPAR'00 Proceedings of the 7th international conference on Logic for programming and automated reasoning
Consistent data for inconsistent XML document
Information and Software Technology
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The integration of knowledge from multiple sources is an important aspect in several areas such as data warehousing, database integration, automated reasoning systems, active reactive databases and others. Thus a central topic in databases is the construction of integration systems, designed for retrieving and querying uniform data stored in multiple information sources. This chapter illustrates recent techniques for computing repairs as well as consistent answers over inconsistent databases. Often databases may be inconsistent with respect to a set of integrity constraints, that is, one or more integrity constraints are not satisfied. Most of the techniques for computing repairs and queries over inconsistent databases work for restricted cases and only recently there have been proposals to consider more general constraints. In this chapter we give an informal description of the main techniques proposed in the literature.