Querying Key-Value Stores Under Single-Key Constraints: Rewriting and Parallelization

  • Olivier RodriguezEmail author
  • Reza Akbarinia
  • Federico Ulliana
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 11784)


We consider the problem of querying key-value stores in the presence of semantic constraints, expressed as rules on keys, whose purpose is to establish a high-level view over a collection of legacy databases. We focus on the rewriting-based approach for data access, which is the most suitable for the key-value store setting because of the limited expressivity of the data model employed by such systems. Our main contribution is a parallel technique for rewriting and evaluating tree-shaped queries under constraints which is able to speed up query answering. We implemented and evaluated our parallel technique. Results show significant performance gains compared to the baseline sequential approach.



This work has been partially supported by the ANR CQFD Project (ANR-18-CE23-0003).


  1. 1.
  2. 2.
  3. 3.
    Mugnier, M.-L., Thomazo, M.: An introduction to ontology-based query answering with existential rules. In: Koubarakis, M., et al. (eds.) Reasoning Web 2014. LNCS, vol. 8714, pp. 245–278. Springer, Cham (2014). Scholar
  4. 4.
    Calvanese, D., Giacomo, G.D., Lembo, D., Lenzerini, M., Rosati, R.: Tractable reasoning and efficient query answering in description logics: the DL-Lite family. J. Autom. Reason. 39, 385–429 (2007)MathSciNetCrossRefGoogle Scholar
  5. 5.
    Poggi, A., Lembo, D., Calvanese, D., De Giacomo, G., Lenzerini, M., Rosati, R.: Linking data to ontologies. J. Data Semant. (2008)Google Scholar
  6. 6.
    Mugnier, M., Rousset, M., Ulliana, F.: Ontology-mediated queries for NOSQL databases. In: AAAI (2016)Google Scholar
  7. 7.
    Botoeva, E., Calvanese, D., Cogrel, B., Rezk, M., Xiao, G.: OBDA beyond relational DBs: a study for MongoDB (2016)Google Scholar
  8. 8.
    Bienvenu, M., Bourhis, P., Mugnier, M., Tison, S., Ulliana, F.: Ontology-mediated query answering for key-value stores. In: IJCAI (2017)Google Scholar
  9. 9.
    Botoeva, E., Calvanese, D., Cogrel, B., Xiao, G.: Expressivity and complexity of MongoDB queries. In: ICDT (2018)Google Scholar
  10. 10.
    Xiao, G., et al.: Ontology-based data access: a survey. In: IJCAI (2018)Google Scholar
  11. 11.
    Schmidt, A., Waas, F., Kersten, M., Carey, M.J., Manolescu, I., Busse, R.: Xmark: a benchmark for XML data management. In: VLDB (2002)Google Scholar

Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Olivier Rodriguez
    • 1
    Email author
  • Reza Akbarinia
    • 1
  • Federico Ulliana
    • 1
  1. 1.INRIA & LIRMM, Univ. MontpellierMontpellierFrance

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