116 search results - page 3 / 24 » An Extended Relational Database Model for Uncertain and Impr... |
PODS
2009
ACM
14 years 6 months ago
2009
ACM
Querying uncertain data has emerged as an important problem in data management due to the imprecise nature of many measurement data. In this paper we study answering range queries...
CAISE
2010
Springer
13 years 7 months ago
2010
Springer
There is a large amount of data that is published on the Web and several techniques have been developed to extract and integrate data from Web sources. However, Web data are inhere...
WIDM
2003
ACM
13 years 11 months ago
2003
ACM
A growing number of databases especially those published on the Web are becoming available to external users. Users of these databases are provided simple form-based query interfa...
SIGMOD
2007
ACM
14 years 6 months ago
2007
ACM
This paper extends relational processing and optimization to the FISQL/FIRA languages for dynamic schema queries over multidatabases. Dynamic schema queries involve the creation a...
CIKM
2006
Springer
13 years 10 months ago
2006
Springer
In an uncertain database, each data item is modeled as a range associated with a probability density function. Previous works for this kind of data have focussed on simple queries...