2883 search results - page 549 / 577 » Algorithms for merged indexes |
SIGMOD
2009
ACM
14 years 7 months ago
2009
ACM
Keyword search in relational databases (RDBs) has been extensively studied recently. A keyword search (or a keyword query) in RDBs is specified by a set of keywords to explore the...
SIGMOD
2009
ACM
14 years 7 months ago
2009
ACM
We consider the problem of collectively approximating a set of sensor signals using the least amount of space so that any individual signal can be efficiently reconstructed within...
SIGMOD
2008
ACM
14 years 7 months ago
2008
ACM
There has been a significant amount of excitement and recent work on column-oriented database systems ("column-stores"). These database systems have been shown to perfor...
SIGMOD
2006
ACM
14 years 7 months ago
2006
ACM
Given a dataset P and a preference function f, a top-k query retrieves the k tuples in P with the highest scores according to f. Even though the problem is well-studied in convent...
SIGMOD
2003
ACM
14 years 7 months ago
2003
ACM
Most relational query optimizers make use of information about the costs of accessing tuples and data structures on various storage devices. This information can at times be off b...