March 2012
Intermediate to advanced
442 pages
9h 31m
English
Content preview from IBM DB2 9.7 Advanced Application Developer CookbookBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Using the CREATE OR REPLACE clause while creating objects
In DB2 9.7, we can create new database objects, such as aliases, procedures, functions, sequences, triggers, views, nicknames, and variables, with a CREATE OR REPLACE clause. These clauses would replace an object if it's already present; otherwise, they create a new object.
The privileges are preserved while replacing an object. In the case of modules, all of the objects within the module are dropped and the replaced version contains no objects.
The main benefit of using this feature is that DB2 doesn't have to wait for a lock on the database object being replaced. Without this feature, we cannot drop an object that is being used. Now DB2 is very intelligent and capable of making a judgment ...
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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.