13 search results - page 1 / 3 » Equivalence of OLAP Dimension Schemas |
FOIKS
2004
Springer
15 years 2 months ago
2004
Springer
Abstract. Dimension schemas are abstract models of the data hierarchies that populate OLAP warehouses. Although there is abundant work on schema equivalence in a variety of data mo...
VLDB
1998
ACM
15 years 1 months ago
1998
ACM
We propose a multi-dimensional language called nD-SQL with the following features: (i) nD-SQL supports queries that interoperate amongst multiple relational sources with heterogen...
DEXA
2009
Springer
15 years 4 months ago
2009
Springer
Dimension hierarchies represent a substantial part of the data warehouse model. Indeed they allow decision makers to examine data at different levels of detail with On-Line Analyt...
DOLAP
2003
ACM
15 years 2 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...
PODS
2002
ACM
15 years 9 months ago
2002
ACM
In multidimensional data models intended for online analytic processing (OLAP), data are viewed as points in a multidimensional space. Each dimension has structure, described by a...