           select CDbestand
               assign to
               "D:\School\Back-End programmeren\CD-ISAM.dat"
               organization sequential
               access mode dynamic
               record key is C-nummer
               alternate record key C-titel
               alternate record key C-uitvoerder with duplicates
               alternate record key C-genre-nr with duplicates
               file status is CD-status

           select genrebestand
               assign to "D:\School\Back-end programmeren\GENRE.dat"
               organization sequential
               access mode dynamic
               record key is G-code
               file status is genre-status
