491 search results - page 51 / 99 » Optimizing complex queries with multiple relation instances |
SSDBM
2003
IEEE
14 years 27 days ago
2003
IEEE
String data is ubiquitous, and its management has taken on particular importance in the past few years. Approximate queries are very important on string data especially for more c...
VLDB
2007
ACM
14 years 7 months ago
2007
ACM
Estimating the cardinality (i.e. number of distinct elements) of an arbitrary set expression defined over multiple distributed streams is one of the most fundamental queries of in...
ICDE
2002
IEEE
14 years 9 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...
HIPEAC
2010
Springer
13 years 11 months ago
2010
Springer
Abstract. Publish-subscribe systems present the state of the art in information dissemination to multiple users. Such systems have evolved from simple topic-based to the current XM...
SIGMOD
2003
ACM
14 years 7 months ago
2003
ACM
One of the critical deficiencies of SQL is lack of support for ndimensional array-based computations which are frequent in OLAP environments. Relational OLAP (ROLAP) applications ...