25 search results - page 3 / 5 » Materialized Views in Probabilistic Databases for Informatio... |
DKE
1999
13 years 7 months ago
1999
A Data Warehouse DW is a database that collects and stores data from multiple remote and heterogeneous information sources. When a query is posed, it is evaluated locally, without...
EDBT
2009
ACM
13 years 11 months ago
2009
ACM
Many Web applications are based on dynamic interactions between Web components exchanging flows of information. Such a situation arises for instance in mashup systems or when moni...
SIGMOD
2007
ACM
14 years 7 months ago
2007
ACM
Accurate cardinality estimation is critically important to high-quality query optimization. It is well known that conventional cardinality estimation based on histograms or simila...
DAWAK
1999
Springer
14 years 13 hour ago
1999
Springer
A Data Warehouse DW can be abstractly seen as a set of materialized views de ned over relations that are stored in distributed heterogeneous databases. The selection of views for...
SIGMOD
2004
ACM
14 years 7 months ago
2004
ACM
The prevalent use of XML highlights the need for a generic, flexible access-control mechanism for XML documents that supports efficient and secure query access, without revealing ...