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Auflistung nach Autor:in "Bader, Andreas"

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  • Konferenzbeitrag
    Multi-objective scheduling for real-time data warehouses
    (Datenbanksysteme in Business, Technologie und Web (BTW) – 13. Fachtagung des GI-Fachbereichs "Datenbanken und Informationssysteme" (DBIS), 2009) Thiele, Maik; Bader, Andreas; Lehner, Wolfgang
    The issue of write-read contention is one of the most prevalent problems when deploying real-time data warehouses. With increasing load, updates are increasingly delayed and previously fast queries tend to be slowed down considerably. However, depending o
  • Konferenzbeitrag
    Survey and Comparison of Open Source Time Series Databases
    (Datenbanksysteme für Business, Technologie und Web (BTW 2017) - Workshopband, 2017) Bader, Andreas; Kopp, Oliver; Falkenthal, Michael
    Time series data, i.e., data consisting of a series of timestamps and corresponding values, is a special type of data occurring in settings such as “Smart Grids”. Extended analysis techniques called for a new type of databases: Time Series Databases (TSDBs), which are specialized for storing and querying time series data. In this work, we aim for a complete list of all available TSDBs and a feature list of popular open source TSDBs. The systematic search resulted in 83 TSDBs. The twelve most prominent found open source TSDBs are compared. Therefore, 27 criteria in six groups are defined: (i) Distribution/Clusterability, (ii) Functions, (iii) Tags, Continuous Calculation, and Long-term Storage, (iv) Granularity, (v) Interfaces and Extensibility, (vi) Support and License.