March 2001
Intermediate to advanced
640 pages
14h 9m
English
book
Sams Teach Yourself Transact-SQL in 21 Days, Second Edition
by Lowell Mauer, David Solomon, Bennett McEwan
Content preview from Sams Teach Yourself Transact-SQL in 21 Days, Second Edition
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Day 19. Solving Special Trigger Problems
As you have learned on Day 18, "Writing and Testing Triggers," triggers give you the ability to have SQL code execute automatically whenever an action, INSERT, UPDATE, or DELETE is taken against a table. Now that you know how to create triggers and where you should use them, you will see how they can assist you in solving some special requirements in an application.
When designing and creating a complex application that uses T-SQL to access data in a relational database, there will be times when you will want to ensure that certain business rules are enforced. There will also be a need for a particular update to be made throughout multiple tables. By using triggers, you can accomplish these goals. Some ...
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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.