363 search results - page 17 / 73 » Analyzing Plan Diagrams of Database Query Optimizers |
ICDE
2010
IEEE
14 years 1 months ago
2010
IEEE
— Research on query optimization has traditionally focused on exhaustive enumeration of an exponential number of candidate plans. Alternatively, heuristics for query optimization...
BNCOD
1997
13 years 9 months ago
1997
Abstract. In this paper we present two improvements to the partitioning process: 1) A new dynamic bu er management strategy is employed to increase the average block size of I/O-tr...
VLDB
1997
ACM
13 years 12 months ago
1997
ACM
Scheduling query execution plans is a particularly complex problem in hierarchical parallel systems, where each site consists of a collection of local time-shared (e.g., CPU(s) or...
SIGMOD
2006
ACM
14 years 7 months ago
2006
ACM
Consider an XML view defined over a relational database, and a user query specified over this view. This user XML query is typically processed using the following steps: (a) our t...
ICDE
2006
IEEE
14 years 1 months ago
2006
IEEE
We consider the problem of query optimization in distributed stream based systems where multiple continuous queries may be executing simultaneously. In such systems, distribution ...