217 search results - page 9 / 44 » An optimization for query answering on ALC database |
SIGMOD
2006
ACM
14 years 1 months ago
2006
ACM
Although approximate query processing is a prominent way to cope with the requirements of data analysis applications, current database systems do not provide integrated and compre...
VLDB
2007
ACM
14 years 7 months ago
2007
ACM
Incompleteness due to missing attribute values (aka "null values") is very common in autonomous web databases, on which user accesses are usually supported through media...
DASFAA
2004
IEEE
13 years 11 months ago
2004
IEEE
Iceberg queries are a special case of SQL queries involving GROUP BY and HAVING clauses, wherein the answer set is small relative to the database size. We present here a performanc...
MOBIDE
2005
ACM
14 years 1 months ago
2005
ACM
This work addresses the problem of efficient maintenance of the (correct) answers to the continuous spatio-temporal range queries in Moving Objects Databases (MOD), which represen...
ER
2010
Springer
13 years 5 months ago
2010
Springer
Traditional information search in which queries are posed against a known and rigid schema over a structured database is shifting towards a Web scenario in which exposed schemas ar...