204 search results - page 13 / 41 » Containment of Conjunctive Queries with Negation: Algorithms... |
ADBIS
2004
Springer
13 years 11 months ago
2004
Springer
Abstract. We present for the first-order theory of atomic Boolean algebras of sets with linear cardinality constraints a quantifier elimination algorithm. In the case of atomic Boo...
EDBT
2006
ACM
14 years 7 months ago
2006
ACM
The problem of rewriting queries using views has received significant attention because of its applications in a wide variety of datamanagement problems. For select-project-join SQ...
ICDE
2006
IEEE
14 years 9 months ago
2006
IEEE
Graphs have become popular for modeling structured data. As a result, graph queries are becoming common and graph indexing has come to play an essential role in query processing. ...
GFKL
2007
Springer
13 years 11 months ago
2007
Springer
Experimental assessment of the performance of classification algorithms is an important aspect of their development and application on real-world problems. To facilitate this analy...
ICDT
2012
ACM
11 years 10 months ago
2012
ACM
Previous studies of incomplete XML documents have identified three main sources of incompleteness – in structural information, data values, and labeling – and addressed data ...