On the complexity of propositional knowledge base revision, updates, and counterfactuals
Artificial Intelligence
The complexity of nested counterfactuals and iterated knowledge base revisions
Journal of Computer and System Sciences
Consistent query answers in inconsistent databases
PODS '99 Proceedings of the eighteenth ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
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
On the semantics of updates in databases
PODS '83 Proceedings of the 2nd ACM SIGACT-SIGMOD symposium on Principles of database systems
A Logic Programming Approach to the Integration, Repairing and Querying of Inconsistent Databases
Proceedings of the 17th International Conference on Logic Programming
Data Exchange: Semantics and Query Answering
ICDT '03 Proceedings of the 9th International Conference on Database Theory
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
Accessing Data Integration Systems through Conceptual Schemas
ER '01 Proceedings of the 20th International Conference on Conceptual Modeling: Conceptual Modeling
Answering queries using views: A survey
The VLDB Journal — The International Journal on Very Large Data Bases
Integrating data from possibly inconsistent databases
COOPIS '96 Proceedings of the First IFCIS International Conference on Cooperative Information Systems
Tackling inconsistencies in data integration through source preferences
Proceedings of the 2004 international workshop on Information quality in information systems
Computing consistent query answers using conflict hypergraphs
Proceedings of the thirteenth ACM international conference on Information and knowledge management
Consistent query answering under inclusion dependencies
CASCON '04 Proceedings of the 2004 conference of the Centre for Advanced Studies on Collaborative research
Kanata: adaptation and evolution in data sharing systems
ACM SIGMOD Record
Logical foundations of peer-to-peer data integration
PODS '04 Proceedings of the twenty-third ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
Determining source contribution in integration systems
Proceedings of the twenty-fourth ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
A cost-based model and effective heuristic for repairing constraints by value modification
Proceedings of the 2005 ACM SIGMOD international conference on Management of data
ConQuer: efficient management of inconsistent databases
Proceedings of the 2005 ACM SIGMOD international conference on Management of data
The INFOMIX system for advanced integration of incomplete and inconsistent data
Proceedings of the 2005 ACM SIGMOD international conference on Management of data
Minimal-change integrity maintenance using tuple deletions
Information and Computation
Data integration: a logic-based perspective
AI Magazine - Special issue on semantic integration
Database repairing using updates
ACM Transactions on Database Systems (TODS)
Proceedings of the 14th ACM international conference on Information and knowledge management
Consistent query answering under key and exclusion dependencies: algorithms and experiments
Proceedings of the 14th ACM international conference on Information and knowledge management
An intensional approach to the specification of test cases for database applications
Proceedings of the 28th international conference on Software engineering
Proceedings of the twenty-fifth ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
Consistent query answering in databases
ACM SIGMOD Record
A deferred cleansing method for RFID data analytics
VLDB '06 Proceedings of the 32nd international conference on Very large data bases
ACM Transactions on Database Systems (TODS)
Magic Sets and their application to data integration
Journal of Computer and System Sciences
First-order query rewriting for inconsistent databases
Journal of Computer and System Sciences
On reconciling data exchange, data integration, and peer data management
Proceedings of the twenty-sixth ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
Solving abduction by computing joint explanations
Annals of Mathematics and Artificial Intelligence
Distance semantics for database repair
Annals of Mathematics and Artificial Intelligence
Tractable Reasoning and Efficient Query Answering in Description Logics: The DL-Lite Family
Journal of Automated Reasoning
A three-valued semantics for querying and repairing inconsistent databases
Annals of Mathematics and Artificial Intelligence
Conditional functional dependencies for capturing data inconsistencies
ACM Transactions on Database Systems (TODS)
Repair localization for query answering from inconsistent databases
ACM Transactions on Database Systems (TODS)
Inconsistency tolerance in P2P data integration: An epistemic logic approach
Information Systems
Dependencies revisited for improving data quality
Proceedings of the twenty-seventh ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
The Consistency Extractor System: Querying Inconsistent Databases Using Answer Set Programs
SUM '07 Proceedings of the 1st international conference on Scalable Uncertainty Management
Preferred Database Repairs Under Aggregate Constraints
SUM '07 Proceedings of the 1st international conference on Scalable Uncertainty Management
Consistent Data Integration in P2P Deductive Databases
SUM '07 Proceedings of the 1st international conference on Scalable Uncertainty Management
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
Consistent Query Answering: The First Ten Years
SUM '08 Proceedings of the 2nd international conference on Scalable Uncertainty Management
Incompleteness in information integration
Proceedings of the VLDB Endowment
Estimating and bounding aggregations in databases with referential integrity errors
Proceedings of the ACM 11th international workshop on Data warehousing and OLAP
Aggregate queries over ontologies
Proceedings of the 2nd international workshop on Ontologies and information systems for the semantic web
Datalog±: a unified approach to ontologies and integrity constraints
Proceedings of the 12th International Conference on Database Theory
Consistent query answering under primary keys: a characterization of tractable queries
Proceedings of the 12th International Conference on Database Theory
A general datalog-based framework for tractable query answering over ontologies
Proceedings of the twenty-eighth ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
Relative information completeness
Proceedings of the twenty-eighth ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
XML with incomplete information: models, properties, and query answering
Proceedings of the twenty-eighth ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
On the consistent rewriting of conjunctive queries under primary key constraints
Information Systems
Conceptual Graph Rules and Equivalent Rules: A Synthesis
ICCS '09 Proceedings of the 17th International Conference on Conceptual Structures: Conceptual Structures: Leveraging Semantic Technologies
DL-Lite: tractable description logics for ontologies
AAAI'05 Proceedings of the 20th national conference on Artificial intelligence - Volume 2
Query rewriting and answering under constraints in data integration systems
IJCAI'03 Proceedings of the 18th international joint conference on Artificial intelligence
Consistent query answers in the presence of universal constraints
Information Systems
Representing uncertain data: models, properties, and algorithms
The VLDB Journal — The International Journal on Very Large Data Bases
The VLDB Journal — The International Journal on Very Large Data Bases
Extended aggregations for databases with referential integrity issues
Data & Knowledge Engineering
Tractable Query Answering over Conceptual Schemata
ER '09 Proceedings of the 28th International Conference on Conceptual Modeling
Minimal-change integrity maintenance using tuple deletions
Information and Computation
Querying and repairing inconsistent numerical databases
ACM Transactions on Database Systems (TODS)
Consistent query answering over description logic ontologies
RR'07 Proceedings of the 1st international conference on Web reasoning and rule systems
The consistency extractor system: Answer set programs for consistent query answering in databases
Data & Knowledge Engineering
Querying and repairing inconsistent databases under three-valued semantics
ICLP'07 Proceedings of the 23rd international conference on Logic programming
The semantics of consistency and trust in peer data exchange systems
LPAR'07 Proceedings of the 14th international conference on Logic for programming, artificial intelligence and reasoning
On the consistent rewriting of conjunctive queries under primary key constraints
DBPL'07 Proceedings of the 11th international conference on Database programming languages
Querying incomplete data with logic programs: ER strikes back
ER'07 Proceedings of the 26th international conference on Conceptual modeling
Certain answers for XML queries
Proceedings of the twenty-ninth ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
Logic in databases: report on the LID 2008 workshop
ACM SIGMOD Record
Querying incomplete data over extended er schemata
Theory and Practice of Logic Programming
Relative information completeness
ACM Transactions on Database Systems (TODS)
XML with incomplete information
Journal of the ACM (JACM)
Consistent answers to boolean aggregate queries under aggregate constraints
DEXA'10 Proceedings of the 21st international conference on Database and expert systems applications: Part II
Query answering under non-guarded rules in datalog+/-
RR'10 Proceedings of the Fourth international conference on Web reasoning and rule systems
Inconsistency-tolerant semantics for description logics
RR'10 Proceedings of the Fourth international conference on Web reasoning and rule systems
Advanced processing for ontological queries
Proceedings of the VLDB Endowment
Range-consistent answers of aggregate queries under aggregate constraints
SUM'10 Proceedings of the 4th international conference on Scalable uncertainty management
Efficient policy-based inconsistency management in relational knowledge bases
SUM'10 Proceedings of the 4th international conference on Scalable uncertainty management
Query answering under expressive entity-relationship schemata
ER'10 Proceedings of the 29th international conference on Conceptual modeling
Journal of Computer and System Sciences
Incomplete information and certain answers in general data models
Proceedings of the thirtieth ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
On rules with existential variables: Walking the decidability line
Artificial Intelligence
Theoretical Computer Science
Certain answers for views and queries expressed as non-recursive datalog programs with negation
ACIIDS'11 Proceedings of the Third international conference on Intelligent information and database systems - Volume Part I
A logical toolbox for ontological reasoning
ACM SIGMOD Record
Querying conceptual schemata with expressive equality constraints
ER'11 Proceedings of the 30th international conference on Conceptual modeling
Data integration and answer set programming
LPNMR'05 Proceedings of the 8th international conference on Logic Programming and Nonmonotonic Reasoning
An ID-logic formalization of the composition of autonomous databases
LPNMR'05 Proceedings of the 8th international conference on Logic Programming and Nonmonotonic Reasoning
Data integration: a challenging ASP application
LPNMR'05 Proceedings of the 8th international conference on Logic Programming and Nonmonotonic Reasoning
Consistent query answering: five easy pieces
ICDT'07 Proceedings of the 11th international conference on Database Theory
ICDT'07 Proceedings of the 11th international conference on Database Theory
Distance-Based repairs of databases
JELIA'06 Proceedings of the 10th European conference on Logics in Artificial Intelligence
Containment of conjunctive queries over conceptual schemata
DASFAA'06 Proceedings of the 11th international conference on Database Systems for Advanced Applications
Inconsistency tolerance in P2P data integration: an epistemic logic approach
DBPL'05 Proceedings of the 10th international conference on Database Programming Languages
Complexity and approximation of fixing numerical attributes in databases under integrity constraints
DBPL'05 Proceedings of the 10th international conference on Database Programming Languages
Ontological query answering under expressive Entity-Relationship schemata
Information Systems
Efficient application of answer set programming for advanced data integration
PADL'10 Proceedings of the 12th international conference on Practical Aspects of Declarative Languages
Magic sets and their application to data integration
ICDT'05 Proceedings of the 10th international conference on Database Theory
First-order query rewriting for inconsistent databases
ICDT'05 Proceedings of the 10th international conference on Database Theory
Consistent query answers in virtual data integration systems
Inconsistency Tolerance
On the computational complexity of minimal-change integrity maintenance in relational databases
Inconsistency Tolerance
Query answering by rewriting in GLAV data integration systems under constraints
SWDB'04 Proceedings of the Second international conference on Semantic Web and Databases
FoIKS'06 Proceedings of the 4th international conference on Foundations of Information and Knowledge Systems
Query answering in peer-to-peer data exchange systems
EDBT'04 Proceedings of the 2004 international conference on Current Trends in Database Technology
Semantically correct query answers in the presence of null values
EDBT'06 Proceedings of the 2006 international conference on Current Trends in Database Technology
On the first-order reducibility of unions of conjunctive queries over inconsistent databases
EDBT'06 Proceedings of the 2006 international conference on Current Trends in Database Technology
Datalog+/-: a family of languages for ontology querying
Datalog'10 Proceedings of the First international conference on Datalog Reloaded
FOSSACS'12 Proceedings of the 15th international conference on Foundations of Software Science and Computational Structures
A general Datalog-based framework for tractable query answering over ontologies
Web Semantics: Science, Services and Agents on the World Wide Web
On the data complexity of consistent query answering
Proceedings of the 15th International Conference on Database Theory
On the complexity of query answering over incomplete XML documents
Proceedings of the 15th International Conference on Database Theory
Computing universal models under guarded TGDs
Proceedings of the 15th International Conference on Database Theory
Towards more expressive ontology languages: The query answering problem
Artificial Intelligence
Ontology evolution without tears
Web Semantics: Science, Services and Agents on the World Wide Web
When is naive evaluation possible?
Proceedings of the 32nd symposium on Principles of database systems
Policy-based inconsistency management in relational databases
International Journal of Approximate Reasoning
Paraconsistent query answering over DL-Lite ontologies
Web Intelligence and Agent Systems
Taming the infinite chase: query answering under expressive relational constraints
Journal of Artificial Intelligence Research
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In databases with integrity constraints, data may not satisfy the constraints. In this paper, we address the problem of obtaining consistent answers in such a setting, when key and inclusion dependencies are expressed on the database schema. We establish decidability and complexity results for query answering under different assumptions on data (soundness and/or completeness). In particular, after showing that the problem is in general undecidable, we identify the maximal class of inclusion dependencies under which query answering is decidable in the presence of key dependencies. Although obtained in a single database context, such results are directly applicable to data integration, where multiple information sources may provide data that are inconsistent with respect to the global view of the sources.