550 search results - page 29 / 110 » An Expressive Language for Linear Spatial Database Queries |
DATESO
2009
13 years 6 months ago
2009
In order to realize the idea of the Semantic Web, many tools and technologies need to be developed, including a query language. One of the most important technologies that creates ...
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
Although monadic second-order logic (MSO) has been a foundation of XML queries, little work has attempted to take MSO formulae themselves as a programming construct. Indeed, MSO f...
EDBT
2000
ACM
14 years 10 days ago
2000
ACM
the research activities. This abstract is to introduce the approach of a data model - EP data model. Its data structure is able to store as a finite set of nodes arbitrary effectiv...
GPC
2010
Springer
14 years 3 months ago
2010
Springer
Scalability of reasoning systems is one of the main criteria which will determine the success of Semantic Web systems in the future. The focus of recent work is either on (a) expre...