4397 search results - page 52 / 880 » Relational Algebra Operations |
LOGCOM
2002
13 years 7 months ago
2002
The paper is a theoretical study of a generalization of the lexicographic rule for combining ordering relations. We define the concept of priority operator: a priority operator ma...
ICDE
2001
IEEE
14 years 9 months ago
2001
IEEE
The timestamps of now-relative bitemporal databases are modeled as growing, shrinking, or rectangular regions. The shape of these regions makes it a challenge to design bitemporal...
CSI
2007
13 years 7 months ago
2007
The Unified Modeling Language (UML) is being used as the de-facto standard in the software industry. With the adoption of UML 2.0, the new enhancements allow this version to desc...
ICCS
2009
Springer
14 years 2 months ago
2009
Springer
Spatial relations play important role in computer vision, scene analysis, geographic information systems (GIS) and content based image retrieval. Analyzing spatial relations by Fo...
CORR
2007
Springer
13 years 7 months ago
2007
Springer
Data analysis applications typically aggregate data across many dimensions looking for anomalies or unusual patterns. The SQL aggregate functions and the GROUP BY operator produce ...