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DAGSTUHL
1998
13 years 9 months ago
On Active Deductive Databases: The Statelog Approach
After brie y reviewing the basic notions and terminology of active rules and relating them to production rules and deductive rules, respectively, we survey a number of formal appro...
Georg Lausen, Bertram Ludäscher, Wolfgang May
WMCSA
2002
IEEE
14 years 16 days ago
Composing Pervasive Data Using iQL
The emergence of pervasive networked data sources, such as web services, sensors, and mobile devices, enables context-sensitive, mobile applications. We have developed a programmi...
Norman H. Cohen, Hui Lei, Paul Castro, John S. Dav...
IANDC
2006
113views more  IANDC 2006»
13 years 7 months ago
Automata and fixed point logic: A coalgebraic perspective
This paper generalizes existing connections between automata and logic to a coalgestraction level. Let F : Set Set be a standard functor that preserves weak pullbacks. We introdu...
Yde Venema
VLDB
1995
ACM
103views Database» more  VLDB 1995»
13 years 11 months ago
Querying Shapes of Histories
We present a shape definition language, called SDC, for retrieving objects based on shapes contained in the histories associated with these objects. It is a small, yet powerful, l...
Rakesh Agrawal, Giuseppe Psaila, Edward L. Wimmers...
DSS
2002
231views more  DSS 2002»
13 years 7 months ago
Computational aspects of the FLBC framework
Recent research has sought to develop formal languages for business communication as more expressive, flexible and powerful alternatives to current electronic data interchange (ED...
Aspassia Daskalopulu, Marek J. Sergot