91 search results - page 6 / 19 » Aggregate Operators in Constraint Query Languages |
ECEASST
2008
13 years 7 months ago
2008
The OCL (Object Constraint Language) as part of the UML (Unified Modeling Language) is a rich language with different collection kinds (sets, multi-sets, sequences) and a large var...
SOSP
2009
ACM
14 years 4 months ago
2009
ACM
Data-intensive applications are increasingly designed to execute on large computing clusters. Grouped aggregation is a core primitive of many distributed programming models, and i...
ICPR
2008
IEEE
14 years 8 months ago
2008
IEEE
Querying any information system requires the knowledge of some formal language, making it inaccessible to computer-na?ve potential users. We propose a new intuitive querying mecha...
DOLAP
2004
ACM
14 years 25 days ago
2004
ACM
Accurate summary data is of paramount concern in data warehouse systems; however, there have been few attempts to completely characterize the ability to summarize measures. The su...
VLDB
2007
ACM
14 years 7 months ago
2007
ACM
Several recent papers have focused on OLAP over imprecise data, where each fact can be a region, instead of a point, in a multidimensional space. They have provided a multiple-wor...