542 search results - page 31 / 109 » An Effective SPARQL Support over Relational Databases |
DBSEC
2006
13 years 10 months ago
2006
In the Database-As-a-Service (DAS) model, clients store their database contents at servers belonging to potentially untrusted service providers. To maintain data confidentiality, ...
VLDB
2007
ACM
14 years 8 months ago
2007
ACM
Several recent papers have focused on OLAP over imprecise data, where each fact can be a region, instead of a point, in a multidimensional space. They have provided a multiple-wor...
ICDE
2005
IEEE
14 years 10 months ago
2005
IEEE
We consider the problem of efficiently computing the skyline against the most recent N elements in a data stream seen so far. Specifically, we study the n-of-N skyline queries; th...
WISE
2009
Springer
14 years 5 months ago
2009
Springer
ct One significant effort towards combining the virtues of Web search, viz. being accessible to untrained users and able to cope with vastly heterogeneous data, with those of dat...
ACIIDS
2009
IEEE
14 years 1 months ago
2009
IEEE
— We consider the problem of processing exact results for sliding window joins over data streams with limited memory. Existing approaches deal with memory limitations by shedding...