• A framework for user-centered declarative ETL 

    Theodorou, Vasileios; Abelló Gamazo, Alberto; Thiele, Maik; Lehner, Wolfgang (2014)
    Text en actes de congrés
    Accés obert
    As business requirements evolve with increasing information density and velocity, there is a growing need for efficiency and automation of Extract-Transform-Load (ETL) processes. Current approaches for the modeling and ...
  • Automating user-centered design of data-intensive processes 

    Theodorou, Vasileios (Universitat Politècnica de Catalunya, 2017-01-27)
    Tesi
    Accés obert
    Realitzat a/amb:  Tecnische Universität Dresden
    Business Intelligence (BI) enables organizations to collect and analyze internal and external business data to generate knowledge and business value, and provide decision support at the strategic, tactical, and operational ...
  • Bijoux : data generator for evaluating ETL process quality 

    Nakuçi, Emona; Theodorou, Vasileios; Jovanovic, Petar; Abelló Gamazo, Alberto (2014)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Obtaining the right set of data for evaluating the fulfillment of different quality standards in the extract-transform-load (ETL) process design is rather challenging. First, the real data might be out of reach due to ...
  • Data generator for evaluating ETL process quality 

    Theodorou, Vasileios; Jovanovic, Petar; Abelló Gamazo, Alberto; Nakuçi, Emona (Elsevier, 2017-01-01)
    Article
    Accés restringit per política de l'editorial
    Obtaining the right set of data for evaluating the fulfillment of different quality factors in the extract-transform-load (ETL) process design is rather challenging. First, the real data might be out of reach due to different ...
  • Frequent patterns in ETL workflows: An empirical approach 

    Theodorou, Vasileios; Abelló Gamazo, Alberto; Thiele, Maik; Lehner, Wolfgang (Elsevier, 2017-09-05)
    Article
    Accés restringit per política de l'editorial
    The complexity of Business Intelligence activities has driven the proposal of several approaches for the effective modeling of Extract-Transform-Load (ETL) processes, based on the conceptual abstraction of their operations. ...
  • POIESIS: A tool for quality-aware ETL process redesign 

    Theodorou, Vasileios; Abelló Gamazo, Alberto; Thiele, Maik; Lehner, Wolfgang (2015)
    Text en actes de congrés
    Accés obert
    We present a tool, called POIESIS, for automatic ETL process enhancement. ETL processes are essential data-centric activities in modern business intelligence environments and they need to be examined through a viewpoint ...
  • Quality measures for ETL processes 

    Theodorou, Vasileios; Abelló Gamazo, Alberto; Lehner, Wolfgang (Springer, 2014)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    ETL processes play an increasingly important role for the support of modern business operations. These business processes are centred around artifacts with high variability and diverse lifecycles, which correspond to key ...
  • Quality measures for ETL processes: from goals to implementation 

    Theodorou, Vasileios; Abelló Gamazo, Alberto; Lehner, Wolfgang; Thiele, Maik (2016-10-01)
    Article
    Accés obert
    Extraction transformation loading (ETL) processes play an increasingly important role for the support of modern business operations. These business processes are centred around artifacts with high variability and diverse ...