Mediators – used in federated information systems – provide a homogeneous read-only access to a set of autonomous information sources. To achieve semantic integration of the h...
Efficient management of RDF data is an important factor in realizing the Semantic Web vision. The existing approaches store RDF data based on triples instead of a relation model. I...
— Information Systems are subject to a perpetual evolution, which is particularly pressing in Web Information Systems, due to their distributed and often collaborative nature. Su...
Carlo Curino, Hyun J. Moon, MyungWon Ham, Carlo Za...
During data warehouse design, the designer frequently encounters the problem of choosing among different alternatives for the same design construct. The behavior of the chosen desi...
George Papastefanatos, Panos Vassiliadis, Alkis Si...
Databases are continuously evolving environments, where design constructs are added, removed or updated rather often. Small changes in the database configurations might impact a l...
George Papastefanatos, Fotini Anagnostou, Yannis V...