The sample code and data are included here - when unzipping, please preserve directory structure, or files will be overwritten.
Both Data Access layers rely upon aliases being present - the Paradox partition requires DBDEMOS, and the InterBase partition requires one called IBDEMOS. Simply create an alias that points to the IBDEMOS.GDB file in the data subdirectory to facilitate this, or change the TDatabase component's settings to reflect your local setup.
Executables are also included for the use of folks who don't have the C/S or Enterprise versions of Delphi.