AScale: Auto-Scale in and out ETL+Q Framework

Conference paper
Part of the Communications in Computer and Information Science book series (CCIS, volume 613)


The purpose of this study is to investigate the problem of providing automatic scalability and data freshness to data warehouses, while simultaneously dealing with high-rate data efficiently. In general, data freshness is not guaranteed in these contexts, since data loading, transformation and integration are heavy tasks that are performed only periodically.

Desirably, users developing data warehouses need to concentrate solely on the conceptual and logic design such as business driven requirements, logical warehouse schemas, workload and ETL process, while physical details, including mechanisms for scalability, freshness and integration of high-rate data, should be left for automated tools.

In this regard, we propose a universal data warehouse parallelization system, that is, an approach to enable the automatic scalability and freshness of warehouses and ETL processes. A general framework for testing and implementing the proposed system was developed. The results show that the proposed system is capable of handling scalability to provide the desired processing speed and data freshness.


Algorithms Architecture Performance Distributed Elastic Parallel processing Distributed systems Database Scalability Load-balance 



This project is part of a larger software prototype, partially financed by, Portugal, CISUC research group from the University of Coimbra and by the Foundation for Science and Technology.


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Copyright information

© Springer International Publishing Switzerland 2016

Authors and Affiliations

  1. 1.Department of Computer SciencesUniversity of CoimbraCoimbraPortugal

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