136 search results - page 2 / 28 » Optimization and Dataflow Algorithms for Nested Tree Queries |
IEEECSA
2009
13 years 6 months ago
2009
- The SQL language allows users to express queries that have nested subqueries in them. Optimization of nested queries has received considerable attention over the last few years. ...
DAWAK
2003
Springer
14 years 1 months ago
2003
Springer
We introduce a new method for optimization of SQL queries with nested subqueries. The method is based on the idea of Boolean aggregates, aggregates that compute the conjunction or ...
VISUAL
1999
Springer
14 years 23 days ago
1999
Springer
Abstract. Methods for processing of pictorial queries speci ed by pictorial query trees are presented. Leaves of a pictorial query tree correspond to individual pictorial queries w...
ICDE
2003
IEEE
14 years 10 months ago
2003
IEEE
We present a query architecture in which join operators are decomposed into their constituent data structures (State Modules, or SteMs), and dataflow among these SteMs is managed ...
IPPS
2007
IEEE
14 years 2 months ago
2007
IEEE
Although algorithms that employ dynamic reconfiguration are extremely fast, they need the underlying architecture to change structure very rapidly, possibly at each step of the c...