171 search results - page 31 / 35 » Schema Versioning in Data Warehouses |
ICDT
2007
ACM
13 years 10 months ago
2007
ACM
Abstract. We introduce approximate data exchange, by relaxing classical data exchange problems such as Consistency and Typechecking to their approximate versions based on Property ...
WIDM
2004
ACM
14 years 11 days ago
2004
ACM
Abstract— Peer-to-Peer networking has become a major research topic over the last few years. Sharing of structured data in such decentralized environments is a challenging proble...
EDBTW
2010
Springer
13 years 10 months ago
2010
Springer
Successfully structuring information in databases, OLAP cubes, and XML is a crucial element in managing data nowadays. However this process brought new challenges to usability. It...
TC
1998
13 years 8 months ago
1998
Data integrity policies often require that quality and integrity metadata be generated and communicated to potential users. However, in data warehouses, federations, and other mul...
DAWAK
2001
Springer
13 years 11 months ago
2001
Springer
Multi-Dimensional Expressions (MDX) provide an interface for asking several related OLAP queries simultaneously. An interesting problem is how to optimize the execution of an MDX q...