OT: Unix or UNIX or unix

Derek Broughton derek at pointerstop.ca
Fri Jun 12 16:35:05 UTC 2009

Odd wrote:

> Derek Broughton wrote:
>> Sandy Harris wrote:
>>> On Thu, Jun 11, 2009 at 3:14 PM, Christopher
>>> Chan<christopher.chan at bradbury.edu.hk> wrote:
>>>> I doubt that banks run everything on Windows. Most likely Solaris or
>>>> some other UNIX will be at the core. Any bank or stock exchange that
>>>> converts fully to Windows and trumpets it deserves what they get.
>>> A lot of banks, stockbrokers, and other big firms run their core systems
>>> on IBM mainframes, a big box with DB2 as the SQL database. Their
>>> desktops are fairly often Windows, though.
>> You think?  None of the mainframe users I've worked with would run DB2
>> (or any rdb) for anything except end-user reporting, with the DB2
>> database populated nightly out of IMS.
> What kind of database software do the ones you've worked with use?

The "IMS" above might have been a clue.  I don't know if it's true, but the 
argument from big-iron users has always been that relational databases run 
too slowly to do concurrent updates and retrievals on the scale that you are 
doubtless dealing with if you're using an IBM mainframe.

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