ECAI
2010
Springer
13 years 2 months ago
2010
Springer
We investigate the complexity of axiom pinpointing for different members of the DL-Lite family of Description Logics. More precisely, we consider the problem of enumerating all mi...
STACS
2009
Springer
13 years 11 months ago
2009
Springer
The homomorphism problem for relational structures is an abstract way of formulating constraint satisfaction problems (CSP) and various problems in database theory. The decision ve...
PODS
2003
ACM
14 years 4 months ago
2003
ACM
Full disjunctions are an associative extension of the outerjoin operator to an arbitrary number of relations. Their main advantage is the ability to maximally combine data from di...