The Amoeba group communication system has two unique aspects: (1) it uses a sequencer-based protocol with negative acknowledgements for achieving a total order on all group messag...
During the maintenance of legacy systems, the structure and the documentationofthe system usually deteriorates, and hence the maintenance becomesprogressively harder and harder. I...
We present a framework for encoding planning problems in logic programs with negation as failure, having computational e ciency as our major consideration. In order to accomplish o...
Abstract. The correctness of nested transactions for multidatabases differs from that of at transactions in that, for nested transactions the execution order of siblings at each re...
Ugur Halici, Ismailcem Budak Arpinar, Asuman Dogac
We consider spatial databases and queries definable using first-order logic and real polynomial inequalities. We are interested in topological queries: queries whose result only ...