708 search results - page 120 / 142 » Optimizing SQL Queries over Text Databases |
BMCBI
2006
13 years 10 months ago
2006
Background: Single nucleotide polymorphisms (SNPs) as defined here are single base sequence changes or short insertion/deletions between or within individuals of a given species. ...
VLDB
1994
ACM
14 years 2 months ago
1994
ACM
Physical data independence is touted as a central feature of modern database systems. Both relational and object-oriented systems, however, force users to frame their queries in t...
ICDE
2000
IEEE
14 years 11 months ago
2000
IEEE
Optimizing queries that involve operations on spatial data requires estimating the selectivity and cost of these operations. In this paper, we focus on estimating the cost of spat...
EDBTW
2010
Springer
14 years 1 months ago
2010
Springer
Successfully structuring information in databases, OLAP cubes, and XML is a crucial element in managing data nowadays. However this process brought new challenges to usability. It...
SIGMOD
2010
ACM
14 years 2 months ago
2010
ACM
Online aggregation is a promising solution to achieving fast early responses for interactive ad-hoc queries that compute aggregates on a large amount of data. Essential to the suc...