1497 search results - page 69 / 300 » Constraint Databases: A Survey |
166
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TC
1997
15 years 7 months ago
1997
In this paper we describe a new approach to repairing violations of integrity constraints in databases with null values. By adopting basic concepts from model-based diagnosis, we ...
167
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CORR
2008
Springer
15 years 6 months ago
2008
Springer
Mining frequent itemsets is a popular method for finding associated items in databases. For this method, support, the co-occurrence frequency of the items which form an associatio...
165
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SIGMOD
2008
ACM
15 years 6 months ago
2008
ACM
Tree pattern queries (TPQs) provide a natural and easy formalism to query tree-structured XML data, and the efficient processing of such queries has attracted a lot of attention. ...
158
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PODS
1998
ACM
15 years 10 months ago
1998
ACM
An extended abstract of this paper appeared in Proceedings of the 15th ACM SIGACT-SIGMODSIGART Symposium on Principles of Database Systems [1]. 2 E-mail: pankaÄcs.duke.edu; httpÂ...
291
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ICDE
2009
IEEE
16 years 8 months ago
2009
IEEE
Abstract-- We consider a novel problem of top-k query processing under budget constraints. We provide both a framework and a set of algorithms to address this problem. Existing alg...