I recently upgraded from 2.2 to 2.8.1. I noticed the exp_relationships had changed table structure, which is fine, but It seems the field id of the channel data table is no longer populated. every entry is now 0 and new entries made have 0 too in the field that used to have the relationship id stored in it.
How does it work now? How is the link made between the data and the relationship? If it’s just using the parent id/child id in the relationship table, how are multiple relationships created in 1 entry?
I have a web app that handles data directly from the database and I need to understand this.
Thanks,
Daniel