August 2013
Intermediate to advanced
672 pages
25h 27m
English
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Chapter 13. Specifying data requirements
Long ago I led a software project on which the three developers sometimes inadvertently used different variable names, lengths, and validation criteria for the same data item. In fact, I used different lengths for the variable that held the user’s name in two programs I wrote myself. Bad things can happen when you interconvert data of different lengths. You can overwrite other data, pick up stray pad characters at the end, have unterminated character strings, and even overwrite program code, eventually causing a crash. Bad things.
Our project suffered from the lack of a data dictionary—a shared repository that defines the meaning, composition, data type, length, format, and allowed values for data elements ...
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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.
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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.