In a past position, I went to the effort of hunting down and documenting the underlying tables that support catalog items, requests, request items, tasks, and the variables.
I’ve moved on from that position though, and no longer have access to those notes. As I started to re-pull that information, I found this graphic, which shows how that tables are related to each other.
I found it originally on this post, and it was originally created by Julian Hoch.
I thought I would pass it along in case any of my readers found themselves needing to know what tables to reference when coding against that area of ServiceNow.
In other news, the guided tour bug that I reached out to HI Support about has been turned into a problem so that they can get the right group working on resolving it.