151 search results - page 12 / 31 » Materializing views with minimal size to answer queries |
SIGMOD
2001
ACM
14 years 8 months ago
2001
ACM
Users often need to optimize the selection of objects by appropriately weighting the importance of multiple object attributes. Such optimization problems appear often in operation...
SIGMOD
2007
ACM
14 years 8 months ago
2007
ACM
Complex queries often contain common or similar subexpressions, either within a single query or among multiple queries submitted as a batch. If so, query execution time can be imp...
VLDB
2001
ACM
14 years 25 days ago
2001
ACM
We are interested in de ning and querying views in a huge and highly heterogeneous XML repository Web scale . In this context, view de nitions are very large and there is no appa...
CORR
2011
Springer
13 years 3 months ago
2011
Springer
Contemporary use of the term ’intension’ derives from the traditional logical doctrine that an idea has both an extension and an intension. In this paper we introduce an intens...
SIGMOD
1998
ACM
14 years 19 days ago
1998
ACM
In large data recording and warehousing environments, it is often advantageous to provide fast, approximate answers to queries, whenever possible. Before DBMSs providing highly-ac...