1302 search results - page 43 / 261 » Multi-objective Query Processing for Database Systems |
ER
2007
Springer
14 years 23 days ago
2007
Springer
The paper presents an unified Description Logic (DL) model for databases. Describing database models using DLs is a fundamental problem in many areas because it turns databases to...
ICDE
2010
IEEE
14 years 8 months ago
2010
IEEE
Personalized database systems give users answers tailored to their personal preferences. While numerous preference evaluation methods for databases have been proposed (e.g., skylin...
SIGMOD
2005
ACM
14 years 2 months ago
2005
ACM
One of the most powerful features of SQL is the use of nested queries. Most research work on the optimization of nested queries focuses on aggregate subqueries. However, the solut...
CIDR
2007
13 years 10 months ago
2007
We propose a radical approach to relational query processing that aims at automatically and consistently achieving a good performance on any memory hierarchy. We believe this auto...
ICDE
2010
IEEE
14 years 8 months ago
2010
IEEE
Estimation via sampling out of highly selective join queries is well known to be problematic, most notably in online aggregation. Without goal-directed sampling strategies, samples...