200 search results - page 37 / 40 » Datalog Queries of Set Constraint Databases |
BTW
2007
Springer
13 years 11 months ago
2007
Springer
: Schema mapping techniques for data exchange have become popular and useful tools both in research and industry. A schema mapping relates a source schema with a target schema via ...
ICDE
2006
IEEE
14 years 8 months ago
2006
IEEE
Counting in general, and estimating the cardinality of (multi-) sets in particular, is highly desirable for a large variety of applications, representing a foundational block for ...
ICDT
2010
ACM
14 years 4 months ago
2010
ACM
We consider a fragment of XPath named `forward-XPath', which contains all descendant and rightwards sibling axes as well as data equality and inequality tests. The satisfiabi...
PODS
2007
ACM
14 years 7 months ago
2007
ACM
The generalized hypertree width GHW(H) of a hypergraph H is a measure of its cyclicity. Classes of conjunctive queries or constraint satisfaction problems whose associated hypergr...
VLDB
2007
ACM
14 years 7 months ago
2007
ACM
We present STAR, a self-tuning algorithm that adaptively sets numeric precision constraints to accurately and efficiently answer continuous aggregate queries over distributed data...