55 search results - page 2 / 11 » Reducing Order Enforcement Cost in Complex Query Plans |
PVLDB
2008
13 years 4 months ago
2008
Estimates of predicate selectivities by database query optimizers often differ significantly from those actually encountered during query execution, leading to poor plan choices a...
ICDE
2008
IEEE
14 years 6 months ago
2008
IEEE
The management of privacy and security in the context of data stream management systems (DSMS) remains largely an unaddressed problem to date. Unlike in traditional DBMSs where acc...
DASFAA
2004
IEEE
13 years 9 months ago
2004
IEEE
Abstract. The efficient management of interval sequences represents a core requirement for many temporal and spatial database applications. With the Relational Interval Tree (RI-tr...
ICDE
2006
IEEE
13 years 11 months ago
2006
IEEE
It has been well recognized that data mining is an interactive and iterative process. In order to support this process, one of the long-term goals of data mining research has been...
DEXA
2005
Springer
13 years 11 months ago
2005
Springer
Bitmap indices are efficient data structures for processing complex, multi-dimensional queries in data warehouse applications and scientific data analysis. For high-cardinality at...