March 2014
Intermediate to advanced
588 pages
15h 43m
English
Content preview from Beginning COBOL for Programmers
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CHAPTER 10
Processing Sequential Files
Previous chapters introduced the mechanics of creating and reading sequential files. This chapter introduces the two most important sequential-file processing problems: control breaks and the file update problem.
Both control breaks and the file update problem involve manipulating ordered sequential files so the chapter begins with a discussion of how sequential files are organized and the difference between ordered and unordered sequential files.
The next section discusses control-break problems. These normally occur when a hierarchically structured printed report has to be produced. But control breaks ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.