I have a database with some 3600+ books, and I mistakenly deleted a custom column of my collections.
No problems, I thought. I shall restore the library file from my trusty Windows Home Server backup. I have done WHS restores on a number of occasions without drama. It was at this point I learned about the dread WHS 81% error. If you are a WHS user, you should learn about it. Google is your friend, but will only confirm your grief.
So, my question, will Calibre's Restore database function help me?