3891 search results - page 512 / 779 » Query Models |
131
Voted
DAWAK
2005
Springer
15 years 9 months ago
2005
Springer
The queries defined on data warehouses are complex and use several join operations that induce an expensive computational cost. This cost becomes even more prohibitive when querie...
142
Voted
SAC
2003
ACM
15 years 9 months ago
2003
ACM
Based on the limitations raised by existing approaches in the context of the Semantic Web, we propose a formalism, Web Sources Global Ontology (WebSOGO), a data meta-model for the...
116
Voted
VLDB
2001
ACM
15 years 8 months ago
2001
ACM
Relational database systems have traditionally optimzed for I/O performance and organized records sequentially on disk pages using the N-ary Storage Model (NSM) (a.k.a., slotted p...
126
Voted
IPPS
2000
IEEE
15 years 8 months ago
2000
IEEE
This paper presents an efficient parallel information retrieval (IR) system which provides fast information service for the Internet users on lowcost high-performance PC-NOW enviro...
144
Voted
VLDB
1998
ACM
15 years 7 months ago
1998
ACM
We propose a multi-dimensional language called nD-SQL with the following features: (i) nD-SQL supports queries that interoperate amongst multiple relational sources with heterogen...