Decades ago I bought a database cartridge for my C64. IIRC it was a no-name brand being sold as close-out or from a bargain bin. It may have been the slowest program I ever bought. It wasn't too bad for the first few entries, but by the time the database had 25 or so entries, adding a new entry would literally take minutes. Once you felt the slowdown, each new entry would take even longer to be accepted. I built an address book, but it became unusable due to the database speed problem.
Does anybody else remember what this thing was called? As far as its progressively slower performance as entries were added, I decided it was poorly designed. I'm thinking they used some sort of recursive method, but not really knowing what they were doing.