514 search results - page 17 / 103 » Answer Sets for Consistent Query Answering in Inconsistent D... |
175
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VLDB
2001
ACM
15 years 9 months ago
2001
ACM
The problem of answering queries using views is to find efficient methods of answering a query using a set of previously materialized views over the database, rather than accessing...
PODS
2010
ACM
15 years 2 months ago
2010
ACM
The notion of certain answers arises when one queries incompletely specified databases, e.g., in data integration and exchange scenarios, or databases with missing information. W...
EUSFLAT
2009
14 years 7 months ago
2009
This paper proposes an approach aimed at obviating empty answers for a family of conjunctive queries involving Boolean or fuzzy value constraints. Contrary to the approaches based ...
100
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SIGMOD
2006
ACM
15 years 3 months ago
2006
ACM
Although approximate query processing is a prominent way to cope with the requirements of data analysis applications, current database systems do not provide integrated and compre...
CIKM
2009
Springer
15 years 2 months ago
2009
Springer
Answering queries using views is a well-established technique in databases. In this context, two outstanding problems can be formulated. The first one consists in deciding whethe...