When you insert the Transfer records in my example, you indicate that they are "edges/relationships" between "Account" node records. The system interprets the v

When you insert the Transfer records in my example, you indicate that they are "edges/relationships" between "Account" node records. The system interprets the values in those records implicitly as foreign keys to the Account records. This is what I mean by "predefined joins" in my example. When you ingest your relationship records, you predefine a join to the system and the GDBMS uses those Transfer records to join node records. Hope this helps.