109 search results - page 9 / 22 » Optimization Using Tuple Subsumption |
PODS
2002
ACM
14 years 7 months ago
2002
ACM
We study two classes of view update problems in relational databases. We are given a source database S, a monotone query Q, and the view Q(S) generated by the query. The first pro...
DASFAA
2010
IEEE
14 years 2 months ago
2010
IEEE
Compression in column-oriented databases has been proven to offer both performance enhancements and reductions in storage consumption. This is especially true for read access as c...
DLOG
2004
13 years 8 months ago
2004
We present algorithms based on truth-prefixed tableaux to solve both Concept Abduction and Contraction in ALN DL. We also analyze the computational complexity of the problems, sho...
ICDE
2011
IEEE
12 years 11 months ago
2011
IEEE
— Uncertain data is quite common nowadays in a variety of modern database applications. At the same time, the join operation is one of the most important but expensive operations...
ASPDAC
2004
ACM
14 years 23 days ago
2004
ACM
Abstract — This paper presents a functional-space decomposition approach to enhance the capability of symbolic simulation. In our symbolic simulator, the control part and datapat...