Many years ago, my employer was transitioning ERP systems from...something CA-owned whose name escapes me and I'd probably have pretty awful memories dredged up

Many years ago, my employer was transitioning ERP systems from...something CA-owned whose name escapes me and I'd probably have pretty awful memories dredged up if I actually went looking for it. Anyway, we were lucky enough to have a very talented intern who was assigned the task of understanding the database schema behind the CA product in order to migrate our data to the new system. It was...horrific. Absolute nightmare of spaghetti. I'd like to say I've seen worse, but I've never seen anything even in the same ballpark. I think we finally gave up after weeks of digging into it and just started over with a mostly clean slate.