140 search results - page 5 / 28 » RDF Aggregate Queries and Views |
ADBIS
2005
Springer
14 years 1 months ago
2005
Springer
We present a formal analysis of the following view-selection problem: Given a set of queries and a database, return definitions of views that, when materialized in the database, w...
JODL
2000
13 years 7 months ago
2000
In this paper we present a new approach for building metadata schemas by integrating existing ontologies and structured vocabularies (thesauri). This integration is based on the s...
ESWS
2005
Springer
14 years 1 months ago
2005
Springer
The Semantic Web is an extension of the current Web in which information is given well-defined meaning to support effective data discovery and integration. The RDF framework is a...
VLDB
1995
ACM
13 years 11 months ago
1995
ACM
Efficient processing of aggregation queries is essential for decision support applications. This paper describes a class of query transformations, called eager aggregation and lat...
DANTE
1999
IEEE
14 years 1 days ago
1999
IEEE