492 search results - page 44 / 99 » Computing aggregations in database query languages |
SIGMOD
2011
ACM
13 years 23 days ago
2011
ACM
We are witnessing an exciting revival of interest in recursive Datalog queries in a variety of emerging application domains such as data integration, information extraction, netwo...
PODS
2008
ACM
14 years 10 months ago
2008
ACM
Processing large data streams is now a major topic in data management. The data involved can be truly massive, and the required analyses complex. In a stream of sequential events ...
VLDB
1994
ACM
14 years 2 months ago
1994
ACM
In existing relational database systems, processing of group-by and computation of aggregate functions are always postponed until all joins are performed. In this paper, we presen...
PODS
2009
ACM
14 years 10 months ago
2009
ACM
The paper investigates the question of whether a partially closed database has complete information to answer a query. In practice an enterprise often maintains master data Dm, a ...
ICDE
2012
IEEE
12 years 12 days ago
2012
IEEE
—Many companies now routinely run massive data analysis jobs – expressed in some scripting language – on large clusters of low-end servers. Many analysis scripts are complex ...