Queen-bee: query interaction-aware for buffer allocation and scheduling problem

  • Authors:
  • Amira Kerkad;Ladjel Bellatreche;Dominique Geniet

  • Affiliations:
  • LIAS/ENSMA Poitiers University, Futuroscope, France;LIAS/ENSMA Poitiers University, Futuroscope, France;LIAS/ENSMA Poitiers University, Futuroscope, France

  • Venue:
  • DaWaK'12 Proceedings of the 14th international conference on Data Warehousing and Knowledge Discovery
  • Year:
  • 2012

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Abstract

In the relational data warehouses, each OLAP query shall involve the fact table. This situation increases the interaction between queries that can have a significant impact on the warehouse performance. This interaction has been largely exploited in solving isolated problems like (i) the multiple-query optimization, (ii) the materialized view selection, (iii) the buffer management, (iv) the query scheduling, etc. Recently, some research efforts studied the impact of the query interaction on optimization problems combining interdependent sub-problems such as buffer management problem (BMP) and the query scheduling problem (QSP). Note that combining two complex problems usually increases the complexity of the integrated problem. In this paper, we study the effect of considering the query interaction on an integrated problem including BMP and QSP (namely, BMQSP). We first present a formalization of the BMQSP and show its hardness study. Due to high complexity of the BMQSP, we propose an algorithm called queen-bee inspired from the natural life of bees. Finally, theoretical and effective (on Oracle 11G) experiments are done using the star schema benchmark data set.