A DuckDB-based course on the Design and Implementation of Database System Internals (“DiDi”). The slides and auxiliary material are available in the GitHub repository. Overview This lecture material has been developed by Torsten Grust to support a 15-week course for undergraduate students of the Database Research Group at University of Tübingen (Germany). A Tour Through DuckDB's Internals The course treads on a path through selected internals of the DuckDB relational database system. 15 weeks d...