93 search results - page 9 / 19 » Optimization and Execution of Complex Scientific Queries ove... |
SIGMOD
2004
ACM
14 years 9 months ago
2004
ACM
We present BLAS , a Bi-LAbeling based System, for efficiently processing complex XPath queries over XML data. BLAS uses Plabeling to process queries involving consecutive child ax...
ICDE
2012
IEEE
11 years 11 months ago
2012
IEEE
— Accurate query performance prediction (QPP) is central to effective resource management, query optimization and query scheduling. Analytical cost models, used in current genera...
PVLDB
2008
13 years 8 months ago
2008
Estimates of predicate selectivities by database query optimizers often differ significantly from those actually encountered during query execution, leading to poor plan choices a...
PPDP
2010
Springer
13 years 7 months ago
2010
Springer
Database query optimizers rely on data statistics in selecting query execution plans. Similar query optimization techniques are desirable for deductive databases and, to make this...
ICDE
2010
IEEE
14 years 6 months ago
2010
IEEE
— Many applications require sorting a table over multiple sort orders: generation of multiple reports from a table, evaluation of a complex query that involves multiple instances...