Marking Favourites

I have set up a “favorites” feature that allows customers to star items. However, every time a customer does so, the user email is put in my master database. Is there a way to make this a virtual column so we don’t have to write into the master file every time. or is there any way to avoid writing into the file and still have the favorite feature. Also, I think this would improve sync speeds. Please help me!

I dont think there is workaround to make your requirement workable. We always need to store the value of the data, such as useremails to control the user level behaivior.