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» Querying Faceted Databases
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PODS
2004
ACM
100views Database» more  PODS 2004»
14 years 9 months ago
Weighted Hypertree Decompositions and Optimal Query Plans
Francesco Scarcello, Gianluigi Greco, Nicola Leone
EDBT
2004
ACM
121views Database» more  EDBT 2004»
14 years 9 months ago
On Containment of Conjunctive Queries with Arithmetic Comparisons
Foto N. Afrati, Chen Li, Prasenjit Mitra
WAIM
2004
Springer
14 years 2 months ago
Learning-Based Top-N Selection Query Evaluation over Relational Databases
A top-N selection query against a relation is to find the N tuples that satisfy the query condition the best but not necessarily completely. In this paper, we propose a new method ...
Liang Zhu, Weiyi Meng
ISCI
2008
93views more  ISCI 2008»
13 years 8 months ago
Safety, domain independence and translation of complex value database queries
This paper considers the theory of database queries on the complex value data model with external functions. Motivated by concerns regarding query evaluation, we first identify re...
Hong-Cheu Liu, Jeffrey Xu Yu, Weifa Liang