Sciweavers

101 search results - page 2 / 21
» Consistent query answering under inclusion dependencies
Sort
View
ICDT
2009
ACM
198views Database» more  ICDT 2009»
14 years 6 months ago
Consistent query answering under primary keys: a characterization of tractable queries
This article deals with consistent query answering to conjunctive queries under primary key constraints. The repairs of an inconsistent database db are obtained by selecting a max...
Jef Wijsen
DKE
2010
167views more  DKE 2010»
13 years 5 months ago
The consistency extractor system: Answer set programs for consistent query answering in databases
We describe the Consistency Extractor System (ConsEx) that computes consistent answers to Datalog queries with negation posed to relational databases that may be inconsistent with...
Mónica Caniupán Marileo, Leopoldo E....
PVLDB
2010
120views more  PVLDB 2010»
13 years 3 months ago
Sampling the Repairs of Functional Dependency Violations under Hard Constraints
Violations of functional dependencies (FDs) are common in practice, often arising in the context of data integration or Web data extraction. Resolving these violations is known to...
George Beskales, Ihab F. Ilyas, Lukasz Golab
ICDT
2012
ACM
251views Database» more  ICDT 2012»
11 years 7 months ago
Computing universal models under guarded TGDs
A universal model of a database D and a set Σ of integrity constraints is a database that extends D, satisfies Σ, and is most general in the sense that it contains sound and co...
André Hernich
ICDT
2009
ACM
135views Database» more  ICDT 2009»
14 years 1 days ago
Repair checking in inconsistent databases: algorithms and complexity
Managing inconsistency in databases has long been recognized as an important problem. One of the most promising approaches to coping with inconsistency in databases is the framewo...
Foto N. Afrati, Phokion G. Kolaitis