217 search results - page 5 / 44 » An optimization for query answering on ALC database |
ICDT
2007
ACM
14 years 1 months ago
2007
ACM
We consider the problem of querying data sources that have limited capabilities and can thus only be accessed by complying with certain binding patterns for their attributes. This ...
SIGMOD
2005
ACM
14 years 7 months ago
2005
ACM
Although integrity constraints have long been used to maintain data consistency, there are situations in which they may not be enforced or satisfied. In this paper, we present Con...
PODS
2003
ACM
14 years 7 months ago
2003
ACM
In this paper we study the following problem. Given a database and a set of queries, we want to find, in advance, a set of views that can compute the answers to the queries, such ...
ADBIS
1998
Springer
13 years 11 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...
VLDB
2001
ACM
14 years 7 months ago
2001
ACM
The problem of answering queries using views is to find efficient methods of answering a query using a set of previously materialized views over the database, rather than accessin...