M/VAX

https://www.mail-archive.com/simh@trailing-edge.com/msg08968.html

Re: [Simh] Lost PDP-11 OSes?
Dave L Thu, 21 May 2020 12:05:31 -0700

Ahh MUMPS, never met it on the PDP11 but did on the VAX, the financial system Quasar (ACT) was written in it. Supported that at 2 companies I worked at tho while it was fast it wasn't so good with abrupt system outages, being the application was never coded to handle transaction integrity, neither was the language back then. You had to code to use the roll-back and checkpointing, it wasn't handled at the DB level like "proper" databases like Rdb were.