December 2010
Intermediate to advanced
451 pages
11h 16m
English
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4-15. Implementing a Failure Flag
Problem
You want to create a boolean variable to determine whether one of the subprograms in the package has generated an error. If an error has been generated by one of the subprograms, then the variable will be set to TRUE. This flag will be evaluated in the driver procedure to determine whether the updates performed by the package should be committed or rolled back.
Solution
Declare a global variable at the package level, and it will be accessible to all objects within. You can do this by declaring the variable within the package body. The following package illustrates such a variable, where the variable has been declared within the package body so that it is available for all objects in the package only. ...
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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.