Re: Aint Life Grand

GEEZ i hope not!

Thanks,
Tommy Holden



From:
"Mark Allen" <scprideandms@xxxxxxxxx>
To:
"Websphere Development Studio Client for iSeries" <wdsci-l@xxxxxxxxxxxx>
Date:
05/15/2008 08:09 PM
Subject:
Re: [WDSCI-L] Aint Life Grand



OMG you are right, twinax will be making a comeback!!!!!!!

On Thu, May 15, 2008 at 8:49 PM, Mark S. Waterbury
<mark.s.waterbury@xxxxxxx>
wrote:

Hello, Frank:

What is old is new again. "In computer science, there are no new

ideas."

Many years ago, when I was fresh out of college, one of my first bosses
taught me that, in Computer Science, old ideas get recycled, over and
over again, in slightly different forms. Apparently, he was correct.

In the late 1970s, I had to support CICS applications on the IBM
mainframes. They worked in a manner very similar to your CCP
applications that you described on the System/3. CICS transactions
consisted of short, run-to-completion programs that performed a single
task. To make a more complex application, you would string together
several of these (or as many as you needed), where one transaction would
end with what CICS calls "RETURN with a TransID" that indicated the
transaction ID of the next screen/program to run, in the sequence. This
arrangement allowed CICS to support hundreds of terminals and hundreds
of on-line users, all simultaneously doing work, running various
transactions, on a machine that was only barely capable of executing 1
MIPS (one million 370 instructions per second). This was less powerful
than an Intel 386, to give you some idea of how much (or how little)
computing power we are talking about here.

IBM's Airline Control Program (ACP) worked in a similar manner, but with
even more rigid constraints on the resources that any given transaction
could consume, before being summarily terminated.

As it turns out, this paradigm is very appropriate for modern web
applications running on a web server, with the client using a web
browser ...

Funny how the really "good ideas" just keep coming back around in
slightly different forms.

Regards,

Mark S. Waterbury

> Frank.Kolmann@xxxxxxxxxx wrote:

I looked up all my posts on WDSCi to this list and it reads like
a soap opera. Thing is just when I get to grips with WDSCi the
world takes off in another direction. RDi SOA GNW(God Knows What)
and I need to try to get to grips with that.

A long time ago I coded PRUF on a S/3 (no subfiles, program active
for a very short time, do it yourself record locks, keeping track
of what was sent to the display somewhere else, etc etc.) all
this stuff the OS/400 does automatically for you.

It seems to me that all the new fangaled stuff is simply
Deja Vu back to the future just like I did 30 years ago on the S/3.
(no subfiles, program active for a very short time,
do it yourself record locks, keeping track of what was sent
to the display somewhere else, etc etc.)
Oh its a bit more sophiscated in that you can have more that one
PRUF (Program Request Under Format) at a time on the display but
essentially the concept is the same.

I hope someone can show me where I am wrong.

Frank Kolmann

--
This is the Websphere Development Studio Client for iSeries (WDSCI-L)
mailing list
To post a message email: WDSCI-L@xxxxxxxxxxxx
To subscribe, unsubscribe, or change list options,
visit: http://lists.midrange.com/mailman/listinfo/wdsci-l
or email: WDSCI-L-request@xxxxxxxxxxxx
Before posting, please take a moment to review the archives
at http://archive.midrange.com/wdsci-l.