217 search results - page 23 / 44 » An optimization for query answering on ALC database |
SIGMOD
2001
ACM
14 years 7 months ago
2001
ACM
Estimating the result size of complex queries that involve selection on multiple attributes and the join of several relations is a difficult but fundamental task in database query...
EDBT
2010
ACM
13 years 10 months ago
2010
ACM
A key advantage of scientific workflow systems over traditional scripting approaches is their ability to automatically record data and process dependencies introduced during workf...
ICDE
2008
IEEE
14 years 8 months ago
2008
IEEE
The continuous intersection join query is computationally expensive yet important for various applications on moving objects. No previous study has particularly addressed this que...
PPDP
2010
Springer
13 years 5 months ago
2010
Springer
Given a set of Datalog rules, facts, and a query, answers to the query can be inferred bottom-up starting with the facts or top-down starting with the query. For efficiently answe...
WEBDB
2009
Springer
14 years 2 months ago
2009
Springer
The question whether a given set of views, defined by queries, can be used to answer another query, arises in several contexts such as query optimization, data integration and se...