March 2008
Intermediate to advanced
458 pages
11h 25m
English
Content preview from Oracle Database Ajax & PHP Web Application DevelopmentBecome 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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Database Triggers
Database triggers are specialized stored programs that are triggered by events in the database. They run between the time when you issue a command and the time when the command is actually performed. As a result of being between these times, you cannot use SQL Data Control Language in triggers: SAVEPOINT, ROLLBACK, or COMMIT. You can define four types of triggers in the Oracle Database 10g family of products:
Data Definition Language (DDL) triggers These triggers fire when you create, alter, rename, or drop objects in a database schema. They are useful to monitor poor programming practices, like when programs create and drop ...
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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.