236 search results - page 15 / 48 » OLAP Query Processing in a Database Cluster |
ICDT
2012
ACM
11 years 11 months ago
2012
ACM
The problems of query containment, equivalence, and minimization are recognized as very important in the context of query processing, specifically of query optimization. In their...
CORR
2010
Springer
13 years 8 months ago
2010
Springer
Multidimensional databases support efficiently on-line analytical processing (OLAP). In this paper, we depict a model dedicated to multidimensional databases. The approach we prese...
ICDE
2008
IEEE
14 years 10 months ago
2008
IEEE
Supporting top-k queries over distributed collections of schemaless XML data poses two challenges. While XML supports expressive query languages such as XPath and XQuery, these la...
DOLAP
2003
ACM
14 years 1 months ago
2003
ACM
The data cube operator exemplifies two of the most important aspects of OLAP queries: aggregation and dimension hierarchies. In earlier work we presented Dwarf, a highly compress...
VLDB
1994
ACM
14 years 20 days ago
1994
ACM
Global clustering has rarely been investigated in the area of spatial database systems although dramatic performance improvements can be achieved by using suitable techniques. In ...