I too use a database I created in Filemaker Pro. It includes lots of info about the negatives. This is for 35, MF, and 4x5. The Dbase has info like date taken, shooting and developing info, subject type, etc. Also things like what images need printing (sometimes I just do a search for those to decide what to print tomorrow), how many good prints I have (and where they are!)
I did this because I had negatives from 30 - 40 years of shooting, and they were everywhere. I wound up with 6 binders (the kind that Printfile sells that are made for this.) and the great thing about the Dbase is that it no longer matters where the negs are, I find them by book, page and frame number by searching on whatever I can remember about them. It took about 2 years to do this, fitting time into shooting and darkroom work, starting with new stuff and working back. (not a business for me)
If you want to know more about this, hit me with an email and I'll go into more detail. (I am willing to share an empty shell of the Dbase also.)