One question while on this subject. I know that each group field needs a unique key, and the same goes for each field. However, is the group and/or field key associated to the actual value stored for a post? Or just the field name/slug?
I am looking at the postmeta table, and I can’t seem to find a relation between the field key and field value stored for a post.
I ask because I am wondering if I need to always use the same unique key for a group, if the group is created on the fly (registering with php)