• Publications
  • Influence
Conceptual modeling for ETL processes
TLDR
The proposed conceptual model is customized for the tracing of inter-attribute relationships and the respective ETL activities in the early stages of a data warehouse project and constructed in a customizable and extensible manner, so that the designer can enrich it with his own re-occurring patterns forETL activities.
Cohesion-Driven Decomposition of Service Interfaces without Access to Source Code
TLDR
The approach progressively decomposes a given service interface into more cohesive interfaces; the backbone of the approach is a suite of cohesion metrics that rely on information, extracted solely from the specification of the service interface.
A survey of logical models for OLAP databases
TLDR
This paper presents different proposals for multidimensional data cubes, which are the basic logical model for OLAP applications, and divides the work in the field in two categories: commercial tools and academic efforts.
Fundamentals of Data Warehouses
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Service-oriented middleware for the Future Internet: state of the art and research directions
TLDR
This article focuses on research challenges for service-oriented middleware design, investigating service description, discovery, access, and composition in the Future Internet of services.
Modeling multidimensional databases, cubes and cube operations
  • Panos Vassiliadis
  • Computer Science
    Proceedings. Tenth International Conference on…
  • 1 July 1998
TLDR
This work proposes a model for multidimensional databases, based on the notion of the base cube, which is used for the calculation of the results of cube operations, and provides a mapping of the multid dimensional model to the relational model and to multiddimensional arrays.
Optimizing ETL processes in data warehouses
TLDR
This paper delves into the logical optimization of ETL processes, modeling it as a state-space search problem and provides algorithms towards the minimization of the execution cost of an ETL workflow.
A Survey of Extract-Transform-Load Technology
  • Panos Vassiliadis
  • Computer Science
    Integrations of Data Warehousing, Data Mining and…
  • 2011
TLDR
This survey covers the conceptual and logical modeling of ETL processes, along with some design methods, and visits each stage of the E-T-L triplet, and examines problems that fall within each of these stages.
State-space optimization of ETL workflows
TLDR
This paper derives into the logical optimization of ETL processes, modeling it as a state-space search problem, and provides an exhaustive and two heuristic algorithms toward the minimization of the execution cost of an ETL workflow.
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