If your Delphi application uses Borland Database Engine (BDE) the BDE must be installed at the PC of your customer. However it is probably that the BDE is already installed there by some other application. Your application can be installed without force BDE installation then check whether the BDE it needs is installed too.
If BDE is found the application can continue. If no BDE is found the applicatin should show a message like "BDE not found, install it please" then finish the work. The application can do it using the ctsascbde.dll
This archive contains:
BDE_checker.exe: application that checks required version of the BDE;
ctsascbde.dll: dll your application can use;
Source code of the BDE_checker. It shows how to use the ctsascbde.dll. | 
