78 search results - page 2 / 16 » Managing Source Schema Evolution in Web Warehouses |
DOLAP
2006
ACM
13 years 11 months ago
2006
ACM
One of the most important tasks performed in the early stages of a data warehouse project is the analysis of the structure and content of the existing data sources and their inten...
ER
2004
Springer
13 years 10 months ago
2004
Springer
Abstract. In heterogeneous data warehousing environments, autonomous data sources are integrated into a materialised integrated database. The schemas of the data sources and the in...
PVLDB
2010
13 years 2 days ago
2010
Database evolution is the process of updating the schema of a database or data warehouse (schema evolution) and evolving the data to the updated schema (data evolution). Database ...
ADBIS
2009
Springer
13 years 12 months ago
2009
Springer
In this paper, we visit the problem of the management of inconsistencies emerging on ETL processes as results of evolution operations g at their sources. We abstract Extract-Transf...
ER
1998
Springer
13 years 9 months ago
1998
Springer
Data warehouses are complex systems that have to deliver highly-aggregated, high quality data from heterogeneous sources to decision makers. Due to the dynamic change in the requir...