@jimbarbour wrote: @Reeza wrote:  Mainframes aren't really used anymore Interesting statement.  🙂  In a lot of large corporations, mainframes are still used for OLTP (think ATM networks, airline reservations, etc.).  A large university might have one even if only to run legacy systems on.     In analytical environments, I think mainframe users are few and far between unless perhaps the mainframe is there for some other reason.   Jim Definitely speaking from an analytical standpoint! I've worked with some really old data sources in my 15 years but have managed to avoid a mainframe system to date.  ... View more