3305 search results - page 65 / 661 » Can we Rely on SQL |
SIGMOD
2003
ACM
14 years 7 months ago
2003
ACM
We discuss the design of an acquisitional query processor for data collection in sensor networks. Acquisitional issues are those that pertain to where, when, and how often data is...
CIS
2004
Springer
14 years 1 months ago
2004
Springer
There are a lot of very important data in database, which need to be protected from attacking. Cryptographic support is an important mechanism of securing them. People, however, mu...
SIGMOD
1999
ACM
13 years 12 months ago
1999
ACM
A major bottleneck in implementing sampling as a primitive relational operation is the ine ciency ofsampling the output of a query. It is not even known whether it is possible to ...
EDBT
2009
ACM
14 years 2 months ago
2009
ACM
We study the problem of estimating selectivity of approximate substring queries. Its importance in databases is ever increasing as more and more data are input by users and are in...
WEBDB
2009
Springer
14 years 2 months ago
2009
Springer
We study the problem of automatically discovering semantic associations between schema elements, namely foreign keys. This problem is important in all applications where data sets...