49 search results - page 1 / 10 » Implementing operations to navigate semantic star schemas |
DOLAP
2003
ACM
14 years 4 months 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...
DOLAP
1999
ACM
14 years 3 months ago
1999
ACM
Modeling data warehouses is a complex task focusing, very often, into internal structures and implementation issues. In this paper we argue that, in order to accurately reflect the...
VLDB
2005
ACM
14 years 4 months ago
2005
ACM
Schemas evolve over time to accommodate the changes in the information they represent. Such evolution causes invalidation of various artifacts depending on the schemas, such as sc...
OTM
2005
Springer
14 years 4 months ago
2005
Springer
We view match as an operator that takes two graph-like structures (e.g., XML schemas) and produces a mapping between the nodes of these graphs that correspond semantically to each ...
DOLAP
2003
ACM
14 years 4 months ago
2003
ACM
Multidimensional aggregation queries constitute the single most important class of queries for data warehousing applications and decision support systems. The bottleneck in the ev...