Mainframe generally refers to the z/Architecture family of IBM computers which traces its ancestry back to the System 360 introduced by IBM in 1965. The most recent z/Architecture model is the z/Enterprise EC12 introduced in the fall of 2012. The operating system used by these machines can be ...

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1answer
77 views

Regarding mainframe - sort card [on hold]

Please can anyone explain use of keyword REMOVECC in sort card? // SYSIN DD * SORT FIELDS=(1,3,CH,A) OUTFILE REMOVECC /*
1
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0answers
26 views

Correlating Search Classifiers in a Database Scan for Sensitive Information

Problem Description I am working on an enterprise data discovery project that is designed to scan databases for sensitive information. The basic search unit is called a classifier and covers things ...
-1
votes
2answers
549 views

Working Agile on Mainframe [closed]

Why do teams that work in a mainframe environment barely use an agile working methodology? What are the key factors of not doing this despite all the technology available? If so, which agile ...
5
votes
9answers
2k views

Why were punch cards used for programming

I am doing a research essay on the history of programming languages, and I was wondering, why did programmers ever write their programs on punch cards? Didn't computer screens and keyboards already ...
1
vote
1answer
321 views

COBOL & Mainframe & Business [closed]

I have made a search on a Hong Kong job seeking website. There numerous of jobs titled "Computer Analyst". These are the requirements of the job: Over 3 year experience relevant working experience in ...
4
votes
1answer
27k views

What is the difference between a server and a mainframe? [closed]

To me, it seems as though "mainframe" is a somewhat dated term; is it simply an older synonym of "server," or does it server a purpose more similar to a cluster/supercomputer?
2
votes
1answer
684 views

COBOL program or JCL? [closed]

I have to perform 3 tasks: an insert, a delete, and a write I'm not sure what the best way to do this is. My mainframe program design skills aren't too tight, so I was looking for advice. Could I ...
12
votes
7answers
5k views

What are the advantages of mainframes? [closed]

The downsides of Mainframes is well trodden ground; expensive, legacy, dwindling community, etc. I'm not particularly interested in the downsides, but I am curious if there are any benefits to ...
3
votes
2answers
460 views

What's new in PL/I, DB2, and S/390 assembler?

I have an upcoming technical interview with a former employer that will focus on PL/I, DB2, and ISPF. The job will be with systems that I architected and wrote myself 20 years ago. The few years of ...
8
votes
8answers
2k views

Are there still any companies/academic centers that use mainframes from 60s-70s? [closed]

As a young software engineer, I often hear other colleagues talk about the days of punch cards and "computers as big as the room." The earliest memories of computers that I have involve MS DOS and ...
4
votes
2answers
312 views

Do you consider mainframe as part of large application deployments? [closed]

When you are setting up your system landscape for large and/or multiple application deployments, do you consider mainframe? If not, why not? If so, what factors are you considering. If you take a ...