FileMaker Pro 5, version 3. After installing the shipping Mobile software on my PC desktop, I used HotSync software to automatically install it on my handheld. I discovered that porting an existing FileMaker Pro 5 database was simple and intuitive. A configuration dialog box allowed me to set various parameters for synchronization. Once you've transferred a database to the handheld, you are free to view, edit, and create records.
Mobile does have certain strict size limits, however.
It holds a maximum of 5000 records per database, a maximum of 20 fields per database, and a maximum of 2000 characters per field. These restrictions preclude extremely lengthy entries. You're also confined to your handheld's free memory, because that's where the application and its associated data must be stored. These programs are cheaper and have a more handheld-centric design than FileMaker Mobile. But not being linked to a full-featured desktop database program, they require more effort to convert and port data to the handheld from the desktop.