How to Stay Ontop of Your Data: Databases, Ontologies and More

  • Diego Calvanese
  • Benjamin Cogrel
  • Sarah Komla-Ebri
  • Davide Lanti
  • Martin Rezk
  • Guohui XiaoEmail author
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 9341)


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) to demonstrate the features of Ontop. First we use Ontop as a SPARQL end-point to load the ontology and mappings, and answer SPARQL queries. Then, we will show how to use Ontop to check inconsistencies and exploit SWRL ontologies.


Ontop framework OBDA SPARQL R2RML OWL OWL 2 QL 



This paper is supported by the EU under the large-scale integrating project (IP) Optique (Scalable End-user Access to Big Data), grant agreement n. FP7-318338.


  1. 1.
    Bagosi, T., et al.: The ontop framework for ontology based data access. In: Zhao, D., Du, J., Wang, H., Wang, P., Ji, D., Pan, J.Z. (eds.) CSWS 2014. CCIS, vol. 480, pp. 67–77. Springer, Heidelberg (2014) Google Scholar
  2. 2.
    Calvanese, D., De Giacomo, G., Lembo, D., Lenzerini, M., Poggi, A., Rodriguez-Muro, M., Rosati, R.: Ontologies and databases: the DL-Lite approach. In: Tessaris, S., Franconi, E., Eiter, T., Gutierrez, C., Handschuh, S., Rousset, M.-C., Schmidt, R.A. (eds.) Reasoning Web. LNCS, vol. 5689, pp. 255–356. Springer, Heidelberg (2009) Google Scholar
  3. 3.
    Giese, M., Soylu, A., Vega-Gorgojo, G., Waaler, A., Haase, P., Jiménez-Ruiz, E., Lanti, D., Rezk, M., Xiao, G., Özçep, Ö.L., Rosati, R.: Optique: zooming in on big data. IEEE Comput. 48(3), 60–67 (2015)CrossRefGoogle Scholar
  4. 4.
    Harris, S., Seaborne, A.: SPARQL 1.1 Query Language. W3C Recommendation, World Wide Web Consortium, March 2013.
  5. 5.
    Kontchakov, R., Rezk, M., Rodríguez-Muro, M., Xiao, G., Zakharyaschev, M.: Answering SPARQL queries over databases under OWL 2 QL entailment regime. In: Mika, P., et al. (eds.) ISWC 2014, Part I. LNCS, vol. 8796, pp. 552–567. Springer, Heidelberg (2014) Google Scholar
  6. 6.
    Lanti, D., Rezk, M., Xiao, G., Calvanese, D.: The NPD benchmark: reality check for OBDA systems. In: Proceedings of the 18th International Conference on Extending Database Technology (EDBT), pp. 617–628 (2015)Google Scholar
  7. 7.
    Manola, F., Mille, E.: RDF primer. W3C Recommendation, World Wide Web Consortium, February 2004.
  8. 8.
    Motik, B., Grau, B.C., Horrocks, I., Wu, Z., Fokoue, A., Lutz, C.: OWL 2 web ontology language: Profiles. W3C Recommendation, World Wide Web Consortium (2012).
  9. 9.
    Rodriguez-Muro, M., Hardi, J., Calvanese, D.: Quest: efficient SPARQL-to-SQL for RDF and OWL. In: Proceedings of the ISWC 2012 Posters and Demonstrations Track (ISWC-PD 2012), CEUR Electronic Workshop Proceedings., vol. 914 (2012)
  10. 10.
    W3C OWL Working Group. OWL 2 Web Ontology Language document overview (second edition). W3C Recommendation, World Wide Web Consortium, December 2012.
  11. 11.
    Xiao, G., Rezk, M., Rodríguez-Muro, M., Calvanese, D.: Rules and ontology based data access. In: Kontchakov, R., Mugnier, M.-L. (eds.) RR 2014. LNCS, vol. 8741, pp. 157–172. Springer, Heidelberg (2014) Google Scholar

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© Springer International Publishing Switzerland 2015

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Authors and Affiliations

  • Diego Calvanese
    • 1
  • Benjamin Cogrel
    • 1
  • Sarah Komla-Ebri
    • 1
  • Davide Lanti
    • 1
  • Martin Rezk
    • 1
  • Guohui Xiao
    • 1
    Email author
  1. 1.Faculty of Computer ScienceFree University of Bozen-BolzanoBolzanoItaly

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