6004 search results - page 84 / 1201 » Parallelizing query optimization |
GRID
2011
Springer
13 years 5 months ago
2011
Springer
CIKM
1999
Springer
14 years 2 months ago
1999
Springer
We present the architecture and a performance assessment of an extensible query optimizer written in Venus. Venus is a general-purpose active-database rule language embedded in C+...
VLDB
1998
ACM
14 years 2 months ago
1998
ACM
Query optimizers normally compile queries into one optimal plan by assuming complete knowledge of all cost parameters such asselectivity and resourceavailability. The execution of...
DBPL
2003
Springer
14 years 3 months ago
2003
Springer
Abstract. In the context of XML data management systems, the estimation of query cardinality is becoming more and more important: the information provided by a query result estimat...
GIS
2005
ACM
14 years 11 months ago
2005
ACM
Group nearest neighbor (GNN) queries are a relatively new type of operations in spatial database applications. Different from a traditional kNN query which specifies a single quer...