Click the "Add" button to open the Locate Database Files dialog box. Type in the full name of the .MDF file, including the full device and directory path, as the following example illustrates:c ...

WDB file format is quite old as it was used in Microsoft Work Database. If someone wants to open it now, they should either have a running instance of the Work Database app or use an alternative ...

How to Open GDB Files. A file with the GDB file extension is an InterBase database file. The GDB file type is the native file type for versions of the InterBase Database prior to version 7.

I know you can open *.dbf files in Access 97 as I had to do it frequently at my last job. I think that it only goes back to version 3 though.