383 search results - page 28 / 77 » Query Containment for Conjunctive Queries with Regular Expre... |
EDBT
2010
ACM
14 years 3 months ago
2010
ACM
The wide adaptation of GPS and cellular technologies has created many applications that collect and maintain large repositories of data in the form of trajectories. Previous work ...
WEBDB
2005
Springer
14 years 2 months ago
2005
Springer
In the relational model it has been shown that the flat relational algebra has the same expressive power as the nested relational algebra, as far as queries over flat relations ...
PLANX
2007
13 years 10 months ago
2007
We present an algorithm to solve XPath decision problems under regular tree type constraints and show its use to statically typecheck XPath queries. To this end, we prove the deci...
VLDB
2004
ACM
14 years 2 months ago
2004
ACM
XML languages, such as XQuery, XSLT and SQL/XML, employ XPath as the search and extraction language. XPath expressions often define complicated navigation, resulting in expensive...
COOPIS
2004
IEEE
14 years 12 days ago
2004
IEEE
Enhanced Multimedia Meta Objects (EMMOs) are a novel approach to multimedia content modeling, combining media, semantic relationships between those media, as well as functionality ...