1004 search results - page 21 / 201 » Safe Constraint Queries |
ICDT
2005
ACM
14 years 1 months ago
2005
ACM
We study the problem of rewriting queries using views in the presence of access patterns, integrity constraints, disjunction, and negation. We provide asymptotically optimal algori...
SEKE
2007
Springer
14 years 1 months ago
2007
Springer
In this paper, we present an approach to query processing for paraconsistent databases in the presence of integrity constraints. Paraconsistent databases are capable of representi...
MDM
2007
Springer
14 years 1 months ago
2007
Springer
— In mobile ad-hoc peer-to-peer (M-P2P) networks, economic models become a necessity for enticing non-cooperative mobile peers to provide service. M-P2P users may issue queries w...
ICDE
2012
IEEE
11 years 10 months ago
2012
IEEE
— Uncertainties in data arise for a number of reasons: when the data set is incomplete, contains conflicting information or has been deliberately perturbed or coarsened to remov...
SSD
2007
Springer
14 years 1 months ago
2007
Springer
In this paper we study the evaluation of continuous constraint queries (CCQs) for spatiotemporal streams. A CCQ triggers an alert whenever a configuration of constraints between s...