When sending a PC database file to the AS/400, file and field descriptions for both the AS/400 system and the PC file are required. The host uses this information to correctly identify and interpret the field data.
The PC description file (.fdf) contains information describing the PC database file. It is a text file that identifies the file data type (such as text or DIF), and contains field data including the name, data type, and length of each field in the transferred file.
When transferring data from the AS/400, you can create a PC description file automatically by checking Save description file in the To PC - Options dialog box:
Conversely, the PC description file is required when sending a PC database file to the host. If necessary, you can use a text editor to create a PC description file, following these conventions: