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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)

Abstract

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.

Notes

Acknowledgements

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

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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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