522 search results - page 41 / 105 » Answering Aggregation Queries in a Secure System Model |
SSDBM
1999
IEEE
13 years 12 months ago
1999
IEEE
On-Line Analytical Processing (OLAP) technologies are being used widely, but the lack of effective means of handling data imprecision, which occurs when exact values are not known...
CORR
2010
Springer
13 years 4 months ago
2010
Springer
Because of the increasing number of electronic data, designing efficient tools to retrieve and exploit documents is a major challenge. Current search engines suffer from two main d...
CIKM
2006
Springer
13 years 11 months ago
2006
Springer
Relational databases are widely used today as a mechanism for providing access to structured data. They, however, are not suitable for typical information finding tasks of end use...
EDBT
2009
ACM
14 years 10 days ago
2009
ACM
Decision Support Systems (DSS) are information systems that support decision making processes. In many scenarios these systems are built on top of data managed by DBMSs and make e...
GIS
2002
ACM
13 years 7 months ago
2002
ACM
Geographical information systems are more and more based on a DBMS with spatial extensions, which is also the case for the system described in this paper. The design and implementa...