492 search results - page 55 / 99 » Computing aggregations in database query languages |
EDBT
2009
ACM
14 years 2 months ago
2009
ACM
Data provenance is essential in applications such as scientific computing, curated databases, and data warehouses. Several systems have been developed that provide provenance fun...
SIGMOD
1998
ACM
14 years 2 months ago
1998
ACM
The proliferation of the World Wide Web has brought information retrieval (IR) techniques to the forefront of search technology. To the average computer user, “searching” now ...
JAPLL
2010
13 years 8 months ago
2010
Answering queries over an incomplete database w.r.t. a set of constraints is an important computational task with applications in fields as diverse as information integration and ...
EDBT
2009
ACM
14 years 1 months ago
2009
ACM
In a database system, disclosure of confidential private data may occur if users can put together the answers of past queries. Traditional access control mechanisms cannot guard a...
EGC
2005
Springer
14 years 3 months ago
2005
Springer
We present a new approach to the grid technology that is based on federated databases and updatable views. Views are used in two ways: (1) as wrappers of local servers that adopt l...