In PEAK session there was mention of a tool/script to find table dependencies. It was mentioned that is was in the CSDM section but I don't see it and did not want to open every post to find it. The script sounded very useful.
I know of a couple methods. One is to go to the table definition and click on the related link for Show Schema Map. This will give you a graphical view. There was also a script created over at ServiceNowGuru but is pretty old.
What I am talking about was a script that was specifically mentioned by Scott Lemm in the CSDM PEAK Webinar just held in September. He said it was posted in the CSDM section of the community, but I can not find it.
