132 search results - page 18 / 27 » Preference query evaluation over expensive attributes |
ICDE
2009
IEEE
14 years 9 months ago
2009
IEEE
XML streams, such as RSS feeds or complex event streams, are becoming increasingly pervasive as they provide the foundation for a wide range of emerging applications. An important...
PVLDB
2008
13 years 7 months ago
2008
Online communities like Flickr, del.icio.us and YouTube have established themselves as very popular and powerful services for publishing and searching contents, but also for ident...
DASFAA
2004
IEEE
13 years 11 months ago
2004
IEEE
Users of database applications, especially in the e-commerce domain, often resort to exploratory "trial-and-error" queries since the underlying data space is huge and unf...
BTW
2009
Springer
14 years 7 days ago
2009
Springer
: Cost-based optimizers in relational databases make use of data statistics to estimate intermediate result cardinalities. Those cardinalities are needed to estimate access plan co...
ISI
2006
Springer
13 years 7 months ago
2006
Springer
Access control mechanisms are commonly used to provide control over who may access sensitive information. However, malicious users can exploit the correlation among the data and in...