93 search results - page 4 / 19 » Algorithms for Materialized View Design in Data Warehousing ... |
ICDE
2000
IEEE
13 years 10 months ago
2000
IEEE
We consider the view data lineage problem in a warehousing environment: For a given data item in a materialized warehouse view, we want to identify the set of source data items th...
PODS
2003
ACM
14 years 6 months ago
2003
ACM
In this paper we study the following problem. Given a database and a set of queries, we want to find, in advance, a set of views that can compute the answers to the queries, such ...
DAWAK
2003
Springer
13 years 11 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...
APWEB
2004
Springer
13 years 11 months ago
2004
Springer
Queries to data warehouses often involve hundreds of complex aggregations over large volumes of data, and so it is infeasible to compute these queries by scanning the data sources ...
DEXA
1998
Springer
13 years 9 months ago
1998
Springer
Abstract. To achieve acceptable query response times in data warehouse environments, the data have to be pre-aggregated according to the need of the applications and stored redunda...