217 search results - page 36 / 44 » An optimization for query answering on ALC database |
SIGMOD
2002
ACM
14 years 8 months ago
2002
ACM
This paper addresses the problem of evaluating ranked top-? queries with expensive predicates. As major DBMSs now all support expensive user-defined predicates for Boolean queries...
ICDE
2010
IEEE
14 years 2 months ago
2010
IEEE
— In recent years, the research community introduced various methods for processing skyline queries in multidimensional databases. The skyline operator retrieves all objects bein...
BDA
2007
13 years 10 months ago
2007
Sharing huge, massively distributed databases in P2P systems is inherently difficult. As the amount of stored data increases, data localization techniques become no longer suffi...
PODS
2000
ACM
14 years 1 months ago
2000
ACM
In a variety of applications ranging from optimizing queries on alphanumeric attributes to providing approximate counts of documents containing several query terms, there is an in...
DKE
1999
13 years 8 months ago
1999
A Data Warehouse DW is a database that collects and stores data from multiple remote and heterogeneous information sources. When a query is posed, it is evaluated locally, without...