654 search results - page 21 / 131 » Complexity of Answering Queries Using Materialized Views |
ADBIS
2000
Springer
14 years 24 days ago
2000
Springer
Queries involving aggregation are typical in a number of database research areas, such as data warehousing, global information systems and mobile computing. One of the main ideas ...
WEBDB
2000
Springer
14 years 6 hour ago
2000
Springer
Rewriting queries using views is a powerful technique that has applications in data integration, data warehousing and query optimization. Query rewriting in relational databases i...
WWW
2011
ACM
13 years 3 months ago
2011
ACM
The problem of answering SPARQL queries over virtual SPARQL views is commonly encountered in a number of settings, including while enforcing security policies to access RDF data, ...
DOLAP
2000
ACM
14 years 24 days ago
2000
ACM
Being able to efficiently answer arbitrary OLAP queries that aggregate along any combination of dimensions over numerical and categorical attributes has been a continued, major co...
ER
2003
Springer
14 years 1 months ago
2003
Springer
Many Internet-based applications have adopted XML as the standard data exchange format. These XML data are typically stored in its native form, thus creating the need to present XM...