262 search results - page 16 / 53 » GUC-Secure Join Operator in Distributed Relational Database |
SIGMOD
2001
ACM
14 years 8 months ago
2001
ACM
Estimating the result size of complex queries that involve selection on multiple attributes and the join of several relations is a difficult but fundamental task in database query...
EDBT
2008
ACM
14 years 8 months ago
2008
ACM
We introduce a novel spatial join operator, the ring-constrained join (RCJ). Given two sets P and Q of spatial points, the result of RCJ consists of pairs p, q (where p P, q Q) ...
IDEAS
2010
IEEE
13 years 7 months ago
2010
IEEE
Even though an effective cost-based query optimizer is of utmost importance for the efficient evaluation of XQuery expressions in native XML database systems, such a component is...
ICDE
2009
IEEE
14 years 10 months ago
2009
IEEE
Due to its considerable ease of use, relational keyword search (R-KWS) has become increasingly popular. Its simplicity, however, comes at the cost of intensive query processing. Sp...
ICDE
2002
IEEE
14 years 10 months ago
2002
IEEE
XML queries typically specify patterns of selection predicates on multiple elements that have some specified tree structured relationships. The primitive tree structured relations...