International Conference on Database and Expert Systems Applications

DEXA 2015: Database and Expert Systems Applications pp 170-185

Integrating Big Data and Relational Data with a Functional SQL-like Query Language

  • Carlyna Bondiombouy
  • Boyan Kolev
  • Oleksandra Levchenko
  • Patrick Valduriez
Conference paper

DOI: 10.1007/978-3-319-22849-5_13

Part of the Lecture Notes in Computer Science book series (LNCS, volume 9261)
Cite this paper as:
Bondiombouy C., Kolev B., Levchenko O., Valduriez P. (2015) Integrating Big Data and Relational Data with a Functional SQL-like Query Language. In: Chen Q., Hameurlain A., Toumani F., Wagner R., Decker H. (eds) Database and Expert Systems Applications. DEXA 2015. Lecture Notes in Computer Science, vol 9261. Springer, Cham

Abstract

Multistore systems have been recently proposed to provide integrated access to multiple, heterogeneous data stores through a single query engine. In particular, much attention is being paid on the integration of unstructured big data typically stored in HDFS with relational data. One main solution is to use a relational query engine that allows SQL-like queries to retrieve data from HDFS, which requires the system to provide a relational view of the unstructured data and hence is not always feasible. In this paper, we introduce a functional SQL-like query language that can integrate data retrieved from different data stores and take full advantage of the functionality of the underlying data processing frameworks by allowing the ad hoc usage of user defined map/filter/reduce operators in combination with traditional SQL statements. Furthermore, the query language allows for optimization by enabling subquery rewriting so that filter conditions can be pushed inside and executed at the data store as early as possible. Our approach is validated with two data stores and a representative query that demonstrates the usability of the query language and evaluates the benefits from query optimization.

Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  • Carlyna Bondiombouy
    • 1
  • Boyan Kolev
    • 1
  • Oleksandra Levchenko
    • 1
    • 2
  • Patrick Valduriez
    • 1
  1. 1.Inria and LIRMMUniversity of MontpellierMontpellierFrance
  2. 2.Odessa National Polytechnic UniversityOdessaUkraine

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