I guess that they are Paradox. I've tried opening a few of the .DB files with Access, Excel, DBF Manager, Note++, etc. None will open them except NotePad++. But, I designed these systems with Delphi 7 and can't remember what tool I used to create the data files. It wasn't Paradox, I have never used Paradox and never had it on any of my computers back then.
I'm giving up on this, not that important. I was just interested in the data structures, not the data. I'm just going to design this system with dbase or SQLite. This app isn't meant to be a multi-user system for a company or lots of users. I'm just building this little app for a friend who is a fellow photographer for use by him and other photographers who may want to use it to track their photography endeavors whether they photograph weddings, landscapes, street scenes, etc., etc.
Tks all for sharing and have great week, life is good if you make it so...
Donald aka 1HuntnMan
PS: I attempted to attach a small Contacts.DB file and Lazarus doesn't allow, Hello, LOL!