179 search results - page 8 / 36 » Fixed-Point Query Languages for Linear Constraint Databases |
SIGMOD
2012
ACM
11 years 10 months ago
2012
ACM
How-To queries answer fundamental data analysis questions of the form: “How should the input change in order to achieve the desired output”. As a Reverse Data Management probl...
PODS
2007
ACM
14 years 7 months ago
2007
ACM
Variables are the distinguishing new feature of XPath 2.0 which permits to select n-tuples of nodes in trees. It is known that the Core of XPath 2.0 captures n-ary first-order (FO...
PODS
1999
ACM
13 years 12 months ago
1999
ACM
We investigate the problem of how to extend constraint query languages with aggregate operators. We deal with standard relational aggregation, and also with aggregates speci c to ...
SDB
1995
13 years 11 months ago
1995
Most of work on partial information in databases asks which operations of standard languages, like relational algebra, can still be performed correctly in the presence of nulls. In...
SEMWEB
2004
Springer
14 years 29 days ago
2004
Springer
Faceted classification allows one to model applications with complex classification hierarchies using orthogonal dimensions. Recent work has examined the use of faceted classi...