2138 search results - page 89 / 428 » Logics for the Relational Syllogistic |
JAIR
2007
13 years 8 months ago
2007
This work is a contribution to prioritized reasoning in logic programming in the presence of preference relations involving atoms. The technique, providing a new interpretation fo...
IFIPTCS
2010
13 years 6 months ago
2010
We introduce a simple logic that allows to quantify over the subobjects of a categorical object. We subsequently show that, for the category of graphs, this logic is equally expres...
WWW
2007
ACM
14 years 8 months ago
2007
ACM
Design principles for XML schemas that eliminate redundancies and avoid update anomalies have been studied recently. Several normal forms, generalizing those for relational databa...
ICDE
2004
IEEE
14 years 9 months ago
2004
IEEE
Most of today's structured data is stored in relational databases. Such a database consists of multiple relations which are linked together conceptually via entity-relationsh...
DBPL
1995
Springer
13 years 11 months ago
1995
Springer
We study the problem of maintaining recursively-de ned views, such as the transitive closure of a relation, in traditional relational languages that do not have recursion mechanis...