Hi all thanks for your help guys...I ll explain my condition, I am an application programmer doing maintenance and enhancement work basically on CICS and a little bit in DB2....i had been working patiently on JCL and learn COBOL but haven't learn REXX.....but the problem is that whenever i want to do something as per my wish the mainframe server discards the change as it is a client server which i am working on so very few option to test and try and also i am using my PC to read texts on the fix procedures used in the programming can't use mainframe environment on home desktop and i want to do something good...
i learn C and C++ but m not a master of it.....I chose python through articles and recommendation from my friends who is unable to help me with tutorials as he working on it a long time ago....i think u all started at some time of your life as a beginner please consider me that for python but not for programming. On 10/18/07, Alan Gauld <[EMAIL PROTECTED]> wrote: > > "bhaaluu" <[EMAIL PROTECTED]> wrote > > > What does that mean... "mainframe technology"? > > I'll take a guess at what it means. > A true mainframe is usually one of (or a clone of) IBM > or ICLmainframe hardware running an OS like OS/390. It is > primarily used for large volume data crunching and the > applications use text only screens such as 3270 terminals > running LU6.2 protocol. LU6.2 is somewhat like CGI > on the web(*). A user is presented with a form which they > fill in and submit as a job to the mainframe. The job > executes and presents the results in the shape of > another form. The coordination between transactions > is managed by a system such as IBM's CICS. > > (*)I've often thought a mainframe wouldmake the ultimate > web server, but sadly I'll never find out as web apps are > usually considered far too trivial to waste a mainframe on... > > For the programmer or 'operator'(sys admin) the system > involves a lot of small executables (programs) each > wrapped up as a "job" in a script written in JCL > (Job Control Language) which will define how much > memory should be allocated, when the job should start, > when it should terminate (regardless of whether it has > finished), its schedulling priority, and so on. > > Any scripting in the python sense tends to be done > using REXX, but it still needs to be wrapped in JCL. > Everything is a job on a mainframe. > > Mainframe people tend to regard Unix boxes in the > same way Unix guys regard PCs - little more than > grown up toys. Mainframes hardly ever fail, they run > the world's top businesses. But they are expensive, > they are used for data centric rathger than user-centric > applications and so many people working on them > find them a tad dull, or boring... I know I spent a very > instructive year wotking on a mainframe project. > I'm glad I did it, I learned a lot about writing super > reliable programs , but I don't want to do another > one - ever! > > Now I may be assuming too much but I'm guerssing > that's what the OP is referring to. > > > Python is anything but boring! I doubt we can help you! > > Well, Python is much more fun than either REXX or JCL so > learning Python may well bring some light relief. > > Alan G. > > _______________________________________________ > Tutor maillist - Tutor@python.org > http://mail.python.org/mailman/listinfo/tutor > -- take care bye Abhishek Negi
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