550 search results - page 38 / 110 » An Expressive Language for Linear Spatial Database Queries |
DBPL
1993
Springer
14 years 25 days ago
1993
Springer
In this paper we study the expressive power of query languages for nested bags. We de ne the ambient bag language by generalizing the constructs of the relational language of Brea...
DEDUCTIVE
1994
13 years 10 months ago
1994
Given an intensional database (IDB) and an extension database (EDB), the view update problem translates updates on the IDB into updates on the EDB. One approach to the view update...
ICPR
2002
IEEE
14 years 9 months ago
2002
IEEE
GraphGrep is an application-independent method for querying graphs, finding all the occurrences of a subgraph in a database of graphs. The interface to GraphGrep is a regular expr...
DEXAW
2009
IEEE
14 years 3 months ago
2009
IEEE
— The amount of semantic data on the Web has increased exponentially in the last years. One of the main reasons for this is the use of RDB2RDF systems, which generate RDF data fr...
GIS
2008
ACM
14 years 9 months ago
2008
ACM
We report on our experience from design and implementation of a powerful map application for managing, querying and visualizing evolving locations of moving objects. Instead of bu...