766 search results - page 89 / 154 » Commuting aggregation operators |
EDBT
2008
ACM
14 years 9 months ago
2008
ACM
XML Schema awareness has been an integral part of the XQuery language since its early design stages. Matching XML data against XML types is the main operation that backs up XQuery...
EUROSEC
2010
ACM
14 years 3 months ago
2010
ACM
Fighting global security threats with only a local view is inherently difficult. Internet network operators need to fight global phenomena such as botnets, but they are hampered...
DEXA
2009
Springer
14 years 3 months ago
2009
Springer
Semantic Web technologies facilitate data integration over a large number of sources with decentralised and loose coordination, ideally leading to interlinked datasets which descri...
ISPAN
2005
IEEE
14 years 2 months ago
2005
IEEE
Noncontiguous data access is a very common access pattern in many scientific applications. Using POSIX I/O to access many pieces of noncontiguous data segments will generate a lot...
IDEAS
2000
IEEE
14 years 1 months ago
2000
IEEE
Most operations of the relational algebra or SQL - like projection with duplicate elimination, join, ordering, group by and aggregations - are efficiently processed using a sorted...