One of the comments: Re: SIMH Looking around at some of their purchase orders, it would seem they have Unisys mainframes running COBOL applications supported by a proprietary ISAM-type database engine, as well as more modern applications written in PowerBuilder with Sybase underpinnings.
Part of the problem they appear to have is the fundamental conceptual mismatch between ISAM and modern relational data stores makes it very hard to migrate the data without significantly rewriting the applications that currently process it. It's not a matter of simply getting off the mainframe hardware, it's getting off DMS II that's the challenge if they're going to be able to move forward. On Tue, Sep 22, 2015 at 10:18 AM, Thomas Conley <[email protected]> wrote: > On 9/22/2015 11:04 AM, Tom Marchant wrote: >> >> On Tue, 22 Sep 2015 14:30:12 +0000, Bill Johnson wrote: >> >>> >>> http://www.theregister.co.uk/2015/09/22/michigan_sues_hp_for_upgrade_failure/ >> >> >> "to date not a single mainframe app has been successfully ported to a more >> modern computer system" >> >> Evidently the Register doesn't know that mainframes *are* modern. >> > > The article talked about a vintage 1960's mainframe, so I guess these guys > are running an S/360. > > Regards, > Tom Conley > > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN -- Mike A Schwab, Springfield IL USA Where do Forest Rangers go to get away from it all? ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
