Complexity tailored design: a new design methodology for databases with incomplete information
Journal of Computer and System Sciences - Special issue on selected papers presented at the 24th annual ACM symposium on the theory of computing (STOC '92)
Complexity of answering queries using materialized views
PODS '98 Proceedings of the seventeenth ACM SIGACT-SIGMOD-SIGART symposium on Principles of database systems
Logical approaches to incomplete information: a survey
Logics for databases and information systems
Consistent query answers in inconsistent databases
PODS '99 Proceedings of the eighteenth ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
On the Structure of Polynomial Time Reducibility
Journal of the ACM (JACM)
Data integration: a theoretical perspective
Proceedings of the twenty-first ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
On the decidability and complexity of query answering over inconsistent and incomplete databases
Proceedings of the twenty-second ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
Minimal-change integrity maintenance using tuple deletions
Information and Computation
Data exchange: semantics and query answering
Theoretical Computer Science - Database theory
Logic programs for consistently querying data integration systems
IJCAI'03 Proceedings of the 18th international joint conference on Artificial intelligence
Query rewriting and answering under constraints in data integration systems
IJCAI'03 Proceedings of the 18th international joint conference on Artificial intelligence
Elements of Finite Model Theory
Elements of Finite Model Theory
A three-valued semantics for querying and repairing inconsistent databases
Annals of Mathematics and Artificial Intelligence
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
Consistent Query Answering: The First Ten Years
SUM '08 Proceedings of the 2nd international conference on Scalable Uncertainty Management
The ORCHESTRA Collaborative Data Sharing System
ACM SIGMOD Record
Consistent query answering under primary keys: a characterization of tractable queries
Proceedings of the 12th International Conference on Database Theory
On approximating optimum repairs for functional dependency violations
Proceedings of the 12th International Conference on Database Theory
On the consistent rewriting of conjunctive queries under primary key constraints
Information Systems
Consistent query answers in the presence of universal constraints
Information Systems
Querying and repairing inconsistent numerical databases
ACM Transactions on Database Systems (TODS)
The consistency extractor system: Answer set programs for consistent query answering in databases
Data & Knowledge Engineering
On the consistent rewriting of conjunctive queries under primary key constraints
DBPL'07 Proceedings of the 11th international conference on Database programming languages
Proceedings of the twenty-ninth ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
A remark on the complexity of consistent conjunctive query answering under primary key violations
Information Processing Letters
Preserving consistency and security of data in e-business applications
MCBE'10/MCBC'10 Proceedings of the 11th WSEAS international conference on mathematics and computers in business and economics and 11th WSEAS international conference on Biology and chemistry
DCUBE: CUBE on dirty databases
WAIM'10 Proceedings of the 11th international conference on Web-age information management
Exploiting conflict structures in inconsistent databases
ADBIS'10 Proceedings of the 14th east European conference on Advances in databases and information systems
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
Sampling the repairs of functional dependency violations under hard constraints
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
Data cleaning and query answering with matching dependencies and matching functions
Proceedings of the 14th International Conference on Database Theory
Proceedings of the 4th International Workshop on Logic in Databases
On the tractability and intractability of consistent conjunctive query answering
Proceedings of the 2011 Joint EDBT/ICDT Ph.D. Workshop
Query rewriting for inconsistent DL-lite ontologies
RR'11 Proceedings of the 5th international conference on Web reasoning and rule systems
A dichotomy in the complexity of consistent query answering for queries with two atoms
Information Processing Letters
FQAS'11 Proceedings of the 9th international conference on Flexible Query Answering Systems
Certain conjunctive query answering in first-order logic
ACM Transactions on Database Systems (TODS)
On the data complexity of consistent query answering
Proceedings of the 15th International Conference on Database Theory
Probabilistic query answering over inconsistent databases
Annals of Mathematics and Artificial Intelligence
Certain conjunctive query answering in SQL
SUM'12 Proceedings of the 6th international conference on Scalable Uncertainty Management
Tractable cases of clean query answering under entity resolution via matching dependencies
SUM'12 Proceedings of the 6th international conference on Scalable Uncertainty Management
Query rewriting using datalog for duplicate resolution
Datalog 2.0'12 Proceedings of the Second international conference on Datalog in Academia and Industry
Inconsistency-Tolerant query rewriting for linear datalog+/-
Datalog 2.0'12 Proceedings of the Second international conference on Datalog in Academia and Industry
Charting the tractability frontier of certain conjunctive query answering
Proceedings of the 32nd symposium on Principles of database systems
A dichotomy in the complexity of counting database repairs
Journal of Computer and System Sciences
Efficient querying of inconsistent databases with binary integer programming
Proceedings of the VLDB Endowment
Sampling from repairs of conditional functional dependency violations
The VLDB Journal — The International Journal on Very Large Data Bases
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We consider the problem of retrieving consistent answers over databases that might be inconsistent with respect to a set of integrity constraints. In particular, we concentrate on sets of constraints that consist of key dependencies, and we give an algorithm that computes the consistent answers for a large and practical class of conjunctive queries. Given a query q, the algorithm returns a first-order query Q (called a query rewriting) such that for every (potentially inconsistent) database I, the consistent answers for q can be obtained by evaluating Q directly on I.