217 search results - page 20 / 44 » An optimization for query answering on ALC database |
SIGMOD
2003
ACM
14 years 7 months ago
2003
ACM
Most relational query optimizers make use of information about the costs of accessing tuples and data structures on various storage devices. This information can at times be off b...
SIGMOD
2007
ACM
14 years 7 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...
PVLDB
2008
13 years 7 months ago
2008
Where can I attend an interesting database workshop close to a sunny beach? Who are the strongest experts on service computing based upon their recent publication record and accep...
AMW
2009
13 years 8 months ago
2009
Conventional operators for data retrieval are either based on exact matching or on total order relationship among elements. Neither of them is appropriate to manage complex data, s...
SIGMOD
2001
ACM
14 years 7 months ago
2001
ACM
We study the problem of generating e cient, equivalent rewritings using views to compute the answer to a query. We take the closed-world assumption, in which views are materialize...