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Bidirectional transformations (BX) play an important role in database schema/application co-evolution. In earlier work, Terwilliger introduced the theoretical concept of a Channel as a BX-based mechanism to de-couple "virtual databases" used by the application code from the actual representation of the data maintained within the DBMS. In this paper, we report on considerations and experiences implementing such Channels in practice in the context of a complex real-world application, and withdblp:conf/edbt/BeineHWC14 fatcat:333erlas6zfozibkm6cdsyqozq