2063 search results - page 355 / 413 » Containment of Aggregate Queries |
APSCC
2009
IEEE
15 years 4 months ago
2009
IEEE
—In a number of scenarios, services generated using a model-driven development (MDD) approach could benefit from “reflective” access to the information in the models from w...
EDBT
2009
ACM
15 years 4 months ago
2009
ACM
In a variety of applications, ranging from data integration to distributed query evaluation, there is a need to obtain sets of data items from several sources (peers) and compute ...
LICS
2009
IEEE
15 years 4 months ago
2009
IEEE
—We introduce extensions of first-order logic (FO) and fixed-point logic (FP) with operators that compute the rank of a definable matrix. These operators are generalizations o...
WEBDB
2009
Springer
15 years 4 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...
CIKM
2009
Springer
15 years 4 months ago
2009
Springer
On photo sharing websites like Flickr and Zooomr, users are offered the possibility to assign tags to their uploaded pictures. Using these tags to find interesting groups of sem...