373 search results - page 25 / 75 » Querying Priced Information in Databases: The Conjunctive Ca... |
SIGMOD
1999
ACM
15 years 2 months ago
1999
ACM
The database query optimizer requires the estimation of the query selectivity to find the most efficient access plan. For queries referencing multiple attributes from the same rel...
SIGMOD
1998
ACM
15 years 1 months ago
1998
ACM
Most databases contain “name constants” like course numbers, personal names, and place names that correspond to entities in the real world. Previous work in integration of het...
PVLDB
2010
14 years 8 months ago
2010
Many DBMS products in the market provide built in encryption support to deal with the security concerns of the organizations. This solution is quite effective in preventing data ...
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SIGIR
2011
ACM
14 years 14 days ago
2011
ACM
Large search engines process thousands of queries per second over billions of documents, making query processing a major performance bottleneck. An important class of optimization...
SIGMOD
2008
ACM
14 years 9 months ago
2008
ACM
We consider the problem of evaluating multiple overlapping queries defined on data streams, where each query is a conjunction of multiple filters and each filter may be shared acr...