191 search results - page 30 / 39 » Aggregation Queries in the Database-As-a-Service Model |
SIGSOFT
2000
ACM
14 years 2 months ago
2000
ACM
Designing architectural frameworks without the aid of formal modeling is error prone. But, unless supported by analysis, formal modeling is prone to its own class of errors, in wh...
APCCM
2009
13 years 10 months ago
2009
Using traditional semantic data modeling, multi-level modeling can be achieved by representing objects in different abstraction hierarchies, namely classification, aggregation and...
DOLAP
1999
ACM
14 years 2 months ago
1999
ACM
Recently numerous proposals for modelling and querying Multidimensional Databases (MDDB) are proposed. Among the still open problems there is a rigorous classification of the diff...
CORR
2010
Springer
13 years 9 months ago
2010
Springer
Incorporating probabilities into the semantics of incomplete databases has posed many challenges, forcing systems to sacrifice modeling power, scalability, or treatment of relatio...
VLDB
2007
ACM
14 years 10 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...