In BGDatabase v.1.8.16 new columns were added for navigating relations in backward direction, similar to how nested fields allow navigating to nested rows
Let's say we have 2 tables, "Artists" and "Paintings". "Paintings" table can be a nested table of "Artists" table, but it also can be just a regular table as well, referencing "Artists" table with relationSingle. In the latter case, prior to version BGDatabase v.1.8.16 there was no way to navigate from "Artists" to their "Paintings" rows, similar to navigating from parent row to its nested rows, now it's possible.
We have updated our inventory example project to version 1.5 and replaced nested tables for items with one regular ROW table.
New columns can be disabled using the setting in the "Settings->Preferences"