DLOG
2007
13 years 7 months ago
2007
Abstract. Conjunctive query answering is an important DL reasoning task. Although this task is by now quite well-understood, tight complexity bounds for conjunctive query answering...
DBISP2P
2003
Springer
13 years 10 months ago
2003
Springer
In this paper we give a robust logical and computational characterisation of peer-to-peer (p2p) database systems. We first define a precise model-theoretic semantics of a p2p sys...