Name
Title | ||
|---|---|---|
Horizontal fragmentation as a technique to improve the performance of drill-down and roll-up queries |
Abstract | ||
|---|---|---|
In this paper, we focus on the horizontal fragmentation of data warehouses. Our main contribution is the proposal of the MHF-DHA algorithm, which is aimed at improving the performance of drill-down and roll-up queries by horizontally fragmenting data warehouses organized in different levels of aggregation. Besides allowing that multiple dimensions be used as a basis for the fragmentation, the algorithm also explores the hierarchical structure of these dimensions. The performance tests carried out using the TPC-H benchmark showed that the proposed fragmentation provides a huge improvement on the query performance, with a reduction in elapsed time and disk accesses between 71% and 99%. |
Year | DOI | Venue |
|---|---|---|
2007 | 10.1145/1244002.1244117 | SAC |
Keywords | Field | DocType |
roll-up query,fragmenting data warehouse,disk access,different level,data warehouse,performance test,query performance,proposed fragmentation,horizontal fragmentation,mhf-dha algorithm,tpc-h benchmark | Data warehouse,Data mining,Computer science,Drill down,Fragmentation (computing),Database,Multiple time dimensions | Conference |
ISBN | Citations | PageRank |
1-59593-480-4 | 5 | 0.48 |
References | Authors | |
10 | 5 | |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Cristina Dutra De Aguiar Ciferri | 1 | 166 | 27.92 |
| Ricardo Rodrigues Ciferri | 2 | 137 | 22.24 |
| Diogo Tuler Forlani | 3 | 5 | 0.81 |
| Agma Juci Machado Traina | 4 | 221 | 17.58 |
| Fernando da Fonseca de Souza | 5 | 36 | 7.89 |