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» Querying Priced Information in Databases: The Conjunctive Ca...
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LATIN
2004
Springer
13 years 10 months ago
Querying Priced Information in Databases: The Conjunctive Case
Eduardo Sany Laber, Renato Carmo, Yoshiharu Kohaya...
PODS
2012
ACM
297views Database» more  PODS 2012»
11 years 7 months ago
Query-based data pricing
Data is increasingly being bought and sold online, and Webbased marketplace services have emerged to facilitate these activities. However, current mechanisms for pricing data are ...
Paraschos Koutris, Prasang Upadhyaya, Magdalena Ba...
EDBT
2006
ACM
105views Database» more  EDBT 2006»
14 years 4 months ago
HASE: A Hybrid Approach to Selectivity Estimation for Conjunctive Predicates
Current methods for selectivity estimation fall into two broad categories, synopsis-based and sampling-based. Synopsis-based methods, such as histograms, incur minimal overhead at ...
Xiaohui Yu, Nick Koudas, Calisto Zuzarte
ICDT
2012
ACM
235views Database» more  ICDT 2012»
11 years 7 months ago
Equivalence and minimization of conjunctive queries under combined semantics
The problems of query containment, equivalence, and minimization are recognized as very important in the context of query processing, specifically of query optimization. In their...
Rada Chirkova
DAWAK
2010
Springer
13 years 5 months ago
Discovery and Application of Functional Dependencies in Conjunctive Query Mining
Abstract. We present an algorithm for mining frequent queries in arbitrary relational databases, over which functional dependencies are assumed. Building upon previous results, we ...
Bart Goethals, Dominique Laurent, Wim Le Page