Ontology-Based Data Federation -- A Framework Proposal

Proc. of the 31st Italian Symp. on Advanced Database Systems (SEBD 2023). Volume 3478 of CEUR Workshop Proceedings, https://ceur-ws.org/. 2023.

Ontology-based data access (OBDA) is a well established approach to information management that facilitates the access to relational data sources through the mediation of a conceptual domain view, given in terms of an ontology, and the use of a declarative mapping between the data layer and the ontology. We formally introduce here the notion of ontology-based data federation (OBDF) to denote a framework that combines OBDA with a data federation layer where multiple heterogeneous sources are virtually exposed as a single relational database. We discuss opportunities and challenges of OBDF, and propose novel techniques to make query answering in the OBDF setting more efficient. Our techniques are validated through an extensive experimental evaluation based on the Berlin SPARQL Benchmark. This work is an abridged version of a paper published in the Proceedings of the 11th International Joint Conference on Knowledge Graphs (IJCKG 2022).

@inproceedings{SEBD-2023,
   title = "Ontology-Based Data Federation -- A Framework Proposal",
   year = "2023",
   author = "Zhenzhen Gu and Diego Calvanese and Di Panfilo, Marco and
Davide Lanti and Alessandro Mosca and Guohui Xiao",
   booktitle = "Proc. of the 31st Italian Symp. on Advanced Database Systems
(SEBD 2023)",
   pages = "210--219",
   volume = "3478",
   publisher = "CEUR-WS.org",
   series = "CEUR Workshop Proceedings, https://ceur-ws.org/",
}