Jörg, ThomasDessloch, StefanFreytag, Johann-ChristophRuf, ThomasLehner, WolfgangVossen, Gottfried2019-02-202019-02-202009978-3-88579-238-3https://dl.gi.de/handle/20.500.12116/20456Extract-transform-load (ETL) tools are primarily designed for data warehouse loading, i.e. to perform physical data integration. When the operational data sources happen to change, the data warehouse gets stale. To ensure data timeliness, the data warehouenText/Conference Paper1617-5468