I found this statement in a FWINTRO.PDF file written by James Bott.
FiveWin comes with a simple database class, but, in order to develop multi-user applications you will either need to purchase a separate database class (FiveDB) or you will need to write your own. The FiveWin TDATABASE class is a good start, but it doesn't provide any file/record busy messages or automatic retry capabilities which are essential for multi-user applications.
Do I need FiveDB too?