I thought DB2 gained its 2 from being the database systems after IMS (DB1?)
Lennie

-----Original Message-----
From: IBM Mainframe Discussion List <[email protected]> On Behalf Of 
Tony Harminc
Sent: 23 July 2025 19:53
To: [email protected]
Subject: Re: IBM Announces z/OS 3.2

On Wed, 23 Jul 2025 at 14:38, Radoslaw Skorupka < 
[email protected]> wrote:

> To complement: "2"
> OS/2 was new OS, not new version of PC-DOS.
> DB/2 was new database, not new version of IMS etc.


As with z/OS and System z (and variations), there was some marketing conflation 
of hardware and software. Does anyone remember IBM's PS2, i.e. a new IBM PC 
with Microchannel and 32-bit architecture), except not called a PC because that 
term had quickly become generic)? OS/2 was the OS for the PS2. But ask anyone 
now what PS2 means, and most likely they'll have no idea. Wikipedia doesn't 
even go to a disambiguation page - just straight to the Sony Play Station 2.

As for DB2, I'm not so sure. First came SQL/DS (on VM), and it was doubtless 
pure marketing speak to call the later MVS port DB2.

Tony H.

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