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 ALTER TABLE operation in a single transaction
When we perform the ALTER TABLE operations, such as dropping a column, in earlier versions of DB2, modifying the data types would force the database administrator to perform REORG on the table before any application would work on the table. Now in DB2 9.7, one can perform an unlimited number of table alterations within a single unit of work. This will allow a data modeler to manage the alteration of the column easily.
Getting ready
By default, autocommit is ON in DB2. That means each SQL statement we execute is a unit of work or a transaction. There are many ways to execute the unit of work; the simplest one is to turn off autocommit, or use db2 + c at the beginning, or use atomic procedures. ...
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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.