710 search results - page 26 / 142 » Relational Expressive Power of Constraint Query Languages |
SIGMOD
2008
ACM
14 years 7 months ago
2008
ACM
This article proposes a core query algebra for probabilistic databases. In essence, this core is part of the query languages of most probabilistic database systems proposed so far...
ICDE
2006
IEEE
14 years 9 months ago
2006
IEEE
The XPath language incorporates powerful primitives for formulating queries containing nested subexpressions which are existentially or universally quantified. However, even the b...
CIKM
2006
Springer
13 years 11 months ago
2006
Springer
Relational databases are widely used today as a mechanism for providing access to structured data. They, however, are not suitable for typical information finding tasks of end use...
AAAI
2007
13 years 10 months ago
2007
Expressive Description Logics (DLs) have been advocated as formalisms for modeling the domain of interest in various application areas. An important requirement is the ability to ...
WSDM
2010
ACM
14 years 5 months ago
2010
ACM
As the Web provides rich data embedded in the immense contents inside pages, we witness many ad-hoc efforts for exploiting fine granularity information across Web text, such as We...