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» Repair checking in inconsistent databases: algorithms and co...
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IS
2008
13 years 5 months ago
The complexity and approximation of fixing numerical attributes in databases under integrity constraints
Consistent query answering is the problem of characterizing and computing the semantically correct answers to queries from a database that may not satisfy certain integrity constr...
Leopoldo E. Bertossi, Loreto Bravo, Enrico Francon...
ICDE
2010
IEEE
311views Database» more  ICDE 2010»
14 years 3 months ago
Detecting Inconsistencies in Distributed Data
— One of the central problems for data quality is inconsistency detection. Given a database D and a set Σ of dependencies as data quality rules, we want to identify tuples in D ...
Wenfei Fan, Floris Geerts, Shuai Ma, Heiko Mü...
VLDB
2007
ACM
137views Database» more  VLDB 2007»
14 years 6 months ago
Improving Data Quality: Consistency and Accuracy
Two central criteria for data quality are consistency and accuracy. Inconsistencies and errors in a database often emerge as violations of integrity constraints. Given a dirty dat...
Gao Cong, Wenfei Fan, Floris Geerts, Xibei Jia, Sh...
CL
2000
Springer
13 years 10 months ago
Querying Inconsistent Databases: Algorithms and Implementation
In this paper, an algorithm for obtaining consistent answers to queries posed to inconsistent relational databases is presented. The algorith is proven to be sound, terminating and...
Alexander Celle, Leopoldo E. Bertossi
ICDT
2010
ACM
161views Database» more  ICDT 2010»
13 years 9 months ago
Data Correspondence, Exchange, and Repair
Checking the correspondence between two or more database instances and enforcing it is a procedure widely used in practice without however having been explored from a theoretical ...
Gösta Grahne, Adrian Onet