2063 search results - page 35 / 413 » Containment of Aggregate Queries |
ICDT
2001
ACM
14 years 2 months ago
2001
ACM
In fast OLAP applications it is often advantageous to provide approximate answers to range queries in order to achieve very high performances. A possible solution is to inquire sum...
VLDB
1987
ACM
14 years 1 months ago
1987
ACM
is at least ae powerful as SQL. Two well known relational query languages that have a sound theoretical foundation are relational algebra and relational calculus. As SQL is more cl...
ICDE
2009
IEEE
14 years 11 months ago
2009
IEEE
Abstract-- Privacy protection is a major concern when microdata needs to be released for ad hoc analyses. This has led to a lot of recent research in privacy goals and table anonym...
DBPL
1997
Springer
14 years 2 months ago
1997
Springer
We examine the power of incremental evaluation systems that use an SQL-like language for maintaining recursively-de ned views. We show that recursive queries such as transitive clo...
PODS
2008
ACM
14 years 10 months ago
2008
ACM
Data exchange, also known as data translation, has been extensively investigated in recent years. One main direction of research has focused on the semantics and the complexity of...