624 search results - page 49 / 125 » Mutant Query Plans |
ESA
2005
Springer
14 years 4 months ago
2005
Springer
We present a new speedup technique for route planning that exploits the hierarchy inherent in real world road networks. Our algorithm preprocesses the eight digit number of nodes n...
VLDB
2005
ACM
14 years 4 months ago
2005
ACM
We study XML stream-specific schema-based optimization. We assume a widely-adopted automata-based execution model for XQuery evaluation. Criteria are established regarding what s...
SIGMOD
2011
ACM
13 years 1 months ago
2011
ACM
Table partitioning splits a table into smaller parts that can be accessed, stored, and maintained independent of one another. From their traditional use in improving query perform...
DELOS
2000
14 years 15 days ago
2000
: We explore the complex problem of providing searching services across interoperable heterogeneous federated digital library systems with rich structure and content. We discuss sy...
SIGMOD
1996
ACM
14 years 3 months ago
1996
ACM
Scheduling query execution plans is an important component of query optimization in parallel database systems. The problem is particularly complex in a shared-nothing execution en...