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ICDE
2005
IEEE
176views Database» more  ICDE 2005»
14 years 10 months ago
Optimizing ETL Processes in Data Warehouses
Extraction-Transformation-Loading (ETL) tools are pieces of software responsible for the extraction of data from several sources, their cleansing, customization and insertion into...
Alkis Simitsis, Panos Vassiliadis, Timos K. Sellis
ESORICS
2009
Springer
14 years 9 months ago
Keep a Few: Outsourcing Data While Maintaining Confidentiality
We put forward a novel paradigm for preserving privacy in data outsourcing which departs from encryption. The basic idea behind our proposal is to involve the owner in storing a li...
Valentina Ciriani, Sabrina De Capitani di Vimercat...
ADBIS
2009
Springer
151views Database» more  ADBIS 2009»
14 years 3 months ago
Rule-Based Management of Schema Changes at ETL Sources
In this paper, we visit the problem of the management of inconsistencies emerging on ETL processes as results of evolution operations g at their sources. We abstract Extract-Transf...
George Papastefanatos, Panos Vassiliadis, Alkis Si...
DSOM
2009
Springer
14 years 3 months ago
Hidden Markov Model Modeling of SSH Brute-Force Attacks
Abstract. Nowadays, network load is constantly increasing and high-speed infrastructures (1-10Gbps) are becoming increasingly common. In this context, flow-based intrusion detecti...
Anna Sperotto, Ramin Sadre, Pieter-Tjerk de Boer, ...
TPCTC
2009
Springer
101views Hardware» more  TPCTC 2009»
14 years 3 months ago
Benchmarking ETL Workflows
Extraction–Transform–Load (ETL) processes comprise complex data workflows, which are responsible for the maintenance of a Data Warehouse. A plethora of ETL tools is currently a...
Alkis Simitsis, Panos Vassiliadis, Umeshwar Dayal,...