492 search results - page 33 / 99 » Computing aggregations in database query languages |
CIKM
2008
Springer
13 years 12 months ago
2008
Springer
The standard SQL assumes that the users are aware of all tables and their schemas to write queries. This assumption may be valid when the users deal with a relatively small number...
VLDB
2011
ACM
13 years 4 months ago
2011
ACM
Schema mappings are high-level specifications that describe the relationship between two database schemas. They are an important tool in several areas of database research, notab...
EDBT
2004
ACM
14 years 10 months ago
2004
ACM
There is a growing interest in on-line algorithms for analyzing and querying data streams, that examine each stream element only once and have at their disposal, only a limited amo...
ICSE
2005
IEEE-ACM
14 years 10 months ago
2005
IEEE-ACM
When building scalable systems that involve general-purpose computation and persistent data, object-oriented languages and relational databases are often essential components. Yet...
WSDM
2009
ACM
14 years 4 months ago
2009
ACM
There has been considerable past work on efficiently computing top k objects by aggregating information from multiple ranked lists of these objects. An important instance of this...