19 search results - page 2 / 4 » dmdw 2001 |
DMDW
2000
13 years 6 months ago
2000
Access. permissions in a data warehouse are currently managed in a separate world from the sources' policies. The consequences are inconsistencies, slow response to change, a...
DMDW
2001
13 years 6 months ago
2001
In this paper, we present SISYPHUS, a storage manager for data cubes that provides an efficient physical base for performing OLAP operations. On-Line Analytical Processing (OLAP) ...
DMDW
2001
13 years 6 months ago
2001
OLAP defines a set of data warehousing query tools characterized by providing a multidimensional view of data. Information can be shown at different aggregation levels (often call...
DMDW
2001
13 years 6 months ago
2001
Accurately estimating the cardinality of aggregate views is crucial for logical and physical design of data warehouses. While the warehouse is under development and data are not a...
DMDW
2001
13 years 6 months ago
2001
Research on logical design of OLAP cubes has tended to assume that the rollup hierarchy in a cube dimension takes the form of a balanced tree. However, experience from industry in...