12 search results - page 1 / 3 » Top-Down Query Processing in First Order Deductive Databases... |
ISMIS
2000
Springer
13 years 9 months ago
2000
Springer
A top-down query processing method for first order deductive databases under the disjunctive well-founded semantics (DWFS) is presented. The method is based upon a characterisation...
PODS
2004
ACM
14 years 5 months ago
2004
ACM
We study the problem of answering queries over sources with limited access patterns. Given a first-order query Q, the problem is to decide whether there is an equivalent query whi...
ADBIS
1998
Springer
13 years 10 months ago
1998
Springer
In order to answer efficiently range queries in 2-d R-trees, first we sort queries by means of a space filling curve, then we group them together, and finally pass them for process...
EDBT
2009
ACM
13 years 3 months ago
2009
ACM
Data Stream Management Systems (DSMS) operate under strict performance requirements. Key to meeting such requirements is to efficiently handle time-critical tasks such as managing...
EDBTW
2006
Springer
13 years 9 months ago
2006
Springer
Abstract. We describe design and implementation of the linguistic query language DDDquery. This language aims at querying a large linguistic database storing a corpus of richly ann...