42 search results - page 5 / 9 » Evaluating the Cost of Boolean Query Mapping |
PODS
2008
ACM
14 years 7 months ago
2008
ACM
We consider a fundamental flow maximization problem that arises during the evaluation of multiple overlapping queries defined on a data stream, in a heterogenous parallel environm...
SIGMOD
2009
ACM
14 years 2 months ago
2009
ACM
Column-stores gained popularity as a promising physical design alternative. Each attribute of a relation is physically stored as a separate column allowing queries to load only th...
ICDT
2010
ACM
14 years 5 months ago
2010
ACM
The work reported here lays the foundations of data exchange in the presence of probabilistic data. This requires rethinking the very basic concepts of traditional data exchange, ...
KRDB
1998
13 years 9 months ago
1998
Previous researchers note the problem for semantic optimisation of database queries caused by its production of a large number of semantically equivalent alternative queries, from...
ICDE
2002
IEEE
14 years 19 days ago
2002
IEEE
Soon, much of the data exchanged over the Internet will be encoded in XML, allowing for sophisticated filtering and content-based routing. We have built a filtering engine called ...