I am working on a database for my card collection and I was wondering if anyone knows how I can append one child record to a parent record. For example; if I get a buy a card one day and I already have that card entered into my database, I want to be able to just put in the cards information (the one I just bought) and then for quantity put 1. I want that record to be added to my other record with that same card info.
Before:
"This is a card" Quantity: 5
After
"This is a card" Quantity: 6
Thanks in advance!