5130 search results - page 5 / 1026 » Constraint Query Languages |
ICDT
2003
ACM
14 years 17 days ago
2003
ACM
We study extensions of first-order logic over the reals with different types of transitive-closure operators as query languages for constraint databases that can be described by...
IV
2002
IEEE
14 years 9 days ago
2002
IEEE
In this paper a visual approach to querying in large spatial databases is presented. A diagrammatic technique utilising a data flow metaphor is used to express different kinds of...
DOCENG
2009
ACM
14 years 1 months ago
2009
ACM
We study the analysis problem of XPath expressions with counting constraints. Such expressions are commonly used in document transformations or programs in which they select porti...
TDM
2004
13 years 8 months ago
2004
Document-centric XML collections contain text-rich documents, marked up with XML tags. The tags add lightweight semantics to the text. Querying such collections calls for a hybrid...
JAPLL
2010
13 years 5 months ago
2010
Answering queries over an incomplete database w.r.t. a set of constraints is an important computational task with applications in fields as diverse as information integration and ...