I shoot film AND digital. Please, no boos! I scan my negatives with an Epson V 700 into Lightroom where I have a "contact sheet" visible on my monitor. Lightroom allows assigning subject headings very easily so that I have a catalog of my film shots, as well as digital. The negatives are assigned numbers by Lightroom, and the date of the scan. I file the negatives in the usual manner, labeling each sheet of filed negatives with the date and noting the inclusive "frame" numbers assigned by Lightroom. Note that I control the beginning number of the scan sequence. Gotta keep up with that!
So far this is working well. I'm working through decades of film shooting. If you go this route or something similar, for goodness' sake establish a GOOD backup routine, or you could lose days of work in one horrendous moment.... Trust me, I know!