DAWAK
2003
Springer
14 years 1 months ago
2003
Springer
In a data warehouse (DW) environment, when the operational environment does not posses or does not want to inform the data about the changes that occurred, controls have to be impl...
DAWAK
2003
Springer
14 years 1 months ago
2003
Springer
Abstract In data clustering, many approaches have been proposed. For example, K-means method and hierarchical method. A problem is in effect by initial value and criterion to comb...
DAWAK
2003
Springer
14 years 1 months ago
2003
Springer
In this paper we present a comprehensive log compression (CLC) method that uses frequent patterns and their condensed representations to identify repetitive information from large ...
DAWAK
2003
Springer
14 years 1 months ago
2003
Springer
On-Line Analytical Processing (OLAP) is a trend in database technology, based on the multidimensional view of data. In this paper we introduce the Cube Presentation Model (CPM), a ...
DAWAK
2003
Springer
14 years 1 months ago
2003
Springer
View materialization is recognized to be one of the most effective ways to increase the Data Warehouse performance; nevertheless, due to the computational complexity of the techniq...
DAWAK
2003
Springer
14 years 1 months ago
2003
Springer
DAWAK
2003
Springer
14 years 1 months ago
2003
Springer
Web Usage Mining is that area of Web Mining which deals with the extraction of interesting knowledge from logging information produced by web servers. In this paper, we present a s...
DAWAK
2003
Springer
14 years 1 months ago
2003
Springer
Data Warehouses provide sophisticated tools for analyzing complex data online, in particular by aggregating data along dimensions spanned by master data. Changes to these master da...
DAWAK
2003
Springer
14 years 1 months ago
2003
Springer
Abstract. Many SQL queries with aggregated subqueries exhibit redundancy (overlap in FROM and WHERE clauses). We propose a method, called the for-loop, to optimize such queries by ...
DAWAK
2003
Springer
14 years 1 months ago
2003
Springer
We introduce a new method for optimization of SQL queries with nested subqueries. The method is based on the idea of Boolean aggregates, aggregates that compute the conjunction or ...