Some colleges want to know if I want to major in photography or digital photography. Besides the use of two different cameras, what the real difference?

They are ignoring the fact that there is only Photography (anything else is a branch of photography) and catering to the whims of a generation that doesn’t want in-depth instruction. -They make more money giving the ignorant what they want rather than actually taking the time to properly educate them.
The difference isn’t so much the camera as it is the recording medium. One is a photosensitive chemical reaction (film) and the other is a photosensitive electronic sensor (digital). If you know Photography you know both.

There is always further reading about Niche Blueprint 2 here.