620 search results - page 23 / 124 » Algorithms for Rewriting Aggregate Queries Using Views |
236
Voted
ICDE
2005
IEEE
16 years 4 months ago
2005
IEEE
Data warehousing and on-line analytical processing (OLAP) are essential for decision support applications. Common OLAP operations include for example drill down, roll up, pivot an...
149
Voted
WWW
2007
ACM
16 years 3 months ago
2007
ACM
Continuous queries are used to monitor changes to time varying data and to provide results useful for online decision making. Typically a user desires to obtain the value of some ...
225
Voted
ICDE
2006
IEEE
16 years 4 months ago
2006
IEEE
Relational division, also known as small divide, is a derived operator of the relational algebra that realizes a many-to-one set containment test, where a set is represented as a ...
129
Voted
TCS
1998
15 years 2 months ago
1998
We introduce a new constraint domain, aggregation constraints, that is useful in database query languages, and in constraint logic programming languages that incorporate aggregate...
150
Voted
BDA
2001
15 years 4 months ago
2001
A Community Web portal is a set of tools for a community of people who want to share information on a certain domain via the Web. The backbone of this system is an ontology which ...