Yep, it's a one-to-many autogenerated backlink, helpful for seeing every e.g. purchase for a user. The lack of backlinks is one of the big frustrations I've ha

Yep, it's a one-to-many autogenerated backlink, helpful for seeing every e.g. purchase for a user. The lack of backlinks is one of the big frustrations I've had in other DB apps, since "this thing has many of these" is such a common pattern.