777 search results - page 133 / 156 » Optimization of Relational Preference Queries |
PODS
2003
ACM
14 years 7 months ago
2003
ACM
Full disjunctions are an associative extension of the outerjoin operator to an arbitrary number of relations. Their main advantage is the ability to maximally combine data from di...
WWW
2001
ACM
14 years 8 months ago
2001
ACM
Integrity constraints are an essential part of a modern schema definition language. They are useful for semantic specification, update consistency control, query optimization, inf...
VLDB
2004
ACM
14 years 1 months ago
2004
ACM
We consider the problem of horizontally partitioning a dynamic relation across a large number of disks/nodes by the use of range partitioning. Such partitioning is often desirable...
SAS
2001
Springer
14 years 3 days ago
2001
Springer
We present the implementation of cTI, a system for universal left-termination inference of logic programs, which heavily relies on static analysis techniques. Termination inference...
DAWAK
1999
Springer
13 years 12 months ago
1999
Springer
A Data Warehouse DW can be abstractly seen as a set of materialized views de ned over relations that are stored in distributed heterogeneous databases. The selection of views for...