Search

Now showing items 1-3 of 3

The NPD benchmark: Reality check for OBDA systems

Lanti D; Rezk M; Xiao G; Calvanese D (OpenProceedings.org, 2015)
In the last decades we moved from a world in which an enterprise had one central database - rather small for todays' standards - to a world in which many different - and big - databases must interact and operate, providing ...
OBDA with the Ontop Framework

Calvanese D; Cogrel B; Guzel Kalayci E; Komla Ebri S; Kontchakov R; Lanti D; Rezk M; Rodriguez-Muro M; Xiao G (Curran, 2015)
Ontology-based data access (OBDA) has become a popular paradigm for accessing data stored in legacy sources using Semantic Web technologies. In the OBDA setting, users access the data through a conceptual layer, which ...
How to Stay Ontop of Your Data: Databases, Ontologies and More

Calvanese D; Cogrel B; Komla-Ebri S; Lanti D; Rezk M; Xiao G (Springer, 2015)
Ontop is an Ontology Based Data Access system allowing users to access a relational database through a conceptual layer provided by an ontology. In this demo, we use the recently developed NPD benchmark (+4~billion triples) ...