237 search results - page 28 / 48 » Efficient Query Processing on the Relational Quadtree |
DNIS
2010
Springer
13 years 11 months ago
2010
Springer
Access control for relational databases is a well researched area. An SQL query is allowed or denied access to database according to the specified access control policy. On the oth...
DEBS
2007
ACM
13 years 12 months ago
2007
ACM
Queries for composite events typically involve the four complementary dimensions of event data, event composition, relationships between events (esp. temporal and causal), and acc...
PVLDB
2008
13 years 7 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...
SIGMOD
2007
ACM
14 years 8 months ago
2007
ACM
Managing uncertain data using probabilistic frameworks has attracted much interest lately in the database literature, and a central computational challenge is probabilistic infere...
EDBT
2009
ACM
13 years 5 months ago
2009
ACM
Data Stream Management Systems (DSMS) operate under strict performance requirements. Key to meeting such requirements is to efficiently handle time-critical tasks such as managing...