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GIS
2004
ACM
14 years 8 months ago
2004
ACM
Data Warehouses and On-Line Analytical Processing systems rely on a multidimensional model that includes dimensions, hierarchies, and measures. Such model allows to express users&...
SIGMOD
1996
ACM
13 years 11 months ago
1996
ACM
Scheduling query execution plans is an important component of query optimization in parallel database systems. The problem is particularly complex in a shared-nothing execution en...
DOLAP
2003
ACM
14 years 21 days ago
2003
ACM
In the last years, lots of work have been devoted to multidimensional modeling, star shape schemas and OLAP operations. However, “drill-across” has not captured as much attent...
ICDE
1999
IEEE
14 years 8 months ago
1999
IEEE
Most operations of the relational algebra or SQL require a sorted stream of tuples for efficient processing. Therefore, processing complex relational queries relies on efficient a...
ICDE
2011
IEEE
12 years 11 months ago
2011
IEEE
— In many applications involving the multiple criteria optimal decision making, users may often want to make a personal trade-off among all optimal solutions. As a key feature, t...