624 search results - page 40 / 125 » Mutant Query Plans |
SIGMOD
2003
ACM
14 years 11 months ago
2003
ACM
Decision-support applications generate queries with complex predicates. We show how the factorization of complex query expressions exposes significant opportunities for exploiting...
PODS
2002
ACM
14 years 11 months ago
2002
ACM
We consider conjunctive queries with arithmetic comparisons over multiple continuous data streams. We specify an algorithm for determining whether or not a query can be evaluated ...
VL
1996
IEEE
14 years 3 months ago
1996
IEEE
This paper describes three new visual languages for use in the coordination of collaborative work in large CSCW environments. EVPL describes work plans and is used to define the c...
SSD
1999
Springer
14 years 3 months ago
1999
Springer
We provide an evaluation of query execution plans (QEP) in the case of queries with one or two spatial joins. The QEPs assume R -tree indexed relations and use a common set of spat...
PVLDB
2008
13 years 10 months ago
2008
XTCcmp, the XQuery Compiler of a native XML database system, extends Starburst's well-known Query Graph Model to serve as an internal representation and basis for query restr...