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Questions tagged [mainframe]

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 z14 introduced in the summer of 2017. The operating system used by these machines can be z/OS, z/VM, z/VSE, z/Linux, and z/TPF.

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21 votes
5 answers

How can there be so much "business logic" for a company that they cannot drop their old COBOL/mainframe code? [closed]

Something which has always confused me is this. I keep hearing about how these big, old corporations which were around in the 1950s (for example) and early on started using COBOL-coded business logic ...
user15080516's user avatar
1 vote
0 answers

Program and Class Design

I am hoping you may be able to give me some advice on class design and what would be best for the program I'm currently writing. This is being done in Java and the goal is to generate letter data ...
Tastybrownies's user avatar
1 vote
1 answer

How to handle multiple stories with changes on the same big Cobol program/module in a Scrum Sprint

How to handle multiple stories with changes on the same big Cobol program/module in a Scrum Sprint without ending in a mini-waterfall at the end of the Sprint? The risk is that the development sub-...
Gunther  De Cock's user avatar
1 vote
0 answers

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 ...
Josh Broadhurst's user avatar
-1 votes
2 answers

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 ...
user52999's user avatar
12 votes
10 answers

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 ...
user avatar
2 votes
1 answer

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 ...
Johnson's user avatar
  • 43
8 votes
1 answer

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?
Jules's user avatar
  • 361
3 votes
1 answer

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 ...
Frantumn's user avatar
  • 185
12 votes
6 answers

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 ...
Scott Weinstein's user avatar
4 votes
2 answers

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 ...
MF Dinosaur's user avatar
8 votes
8 answers

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 ...
djdy's user avatar
  • 191
51 votes
20 answers

Why aren't young programmers interested in mainframes? [closed]

A key issue with mainframes is that the cohort of supporting programmers is dwindling. While normally this wouldn't be a problem in that a falling supply of programmers would be offset by an ...
4 votes
2 answers

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 ...
Jé Queue's user avatar
  • 3,927