110 search results - page 1 / 22 » Maintaining Data Cubes under Dimension Updates |
ICDE
1999
IEEE
14 years 6 months ago
1999
IEEE
OLAP systems support data analysis through a multidimensional data model, according to which data facts are viewed as points in a space of application-related dimensions", or...
SSDBM
2000
IEEE
13 years 8 months ago
2000
IEEE
Multidimensional data cubes are used in large data warehouses as a tool for online aggregation of information. As the number of dimensions increases, supporting efficient queries ...
SIGMOD
1997
ACM
13 years 8 months ago
1997
ACM
A range query applies an aggregation operation over all selected cells of an OLAP data cube where the selection is speci ed by providing ranges of values for numeric dimensions. W...
DAWAK
2004
Springer
13 years 8 months ago
2004
Springer
Abstract. In this paper, we present a fast algorithm to answer rangesum queries in OLAP data cubes. Our algorithm supports constanttime queries while maintaining sub-linear time up...
VLDB
2000
ACM
13 years 8 months ago
2000
ACM
A range-max query finds the maximum value over all selected cells of an on-line analytical processing (OLAP) data cube where the selection is specified by ranges of contiguous val...