But this is also a problem with using Excel for this. Let two other people edit it, and now you've got 3 different versions of the data. Which one is correct?

But this is also a problem with using Excel for this. Let two other people edit it, and now you've got 3 different versions of the data. Which one is correct? Having a single database and giving two other people access to it keeps the data centralised and keeps a single source of truth.