January 2019
Intermediate to advanced
286 pages
7h 41m
English
Content preview from Advanced MySQL 8
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Avoiding the delete trigger
Using trigger is acceptable for any application, but when it comes to the delete trigger, I recommend you avoid it. One of the reasons is that it's very hard to regain data once it is deleted, as restoring a table from backup that has a set of stale data is not advisable at all, as it might incur data inconsistencies from that table with others. In this case, you would have to restore the entire MySQL database, which is stale, resulting in lost trust from users, and frustrating them.
For example, due to business requirements, if the corresponding data is deleted through a trigger that might have a dependency on a new feature, it would be really hard to regain that data. Moreover, new developers might miss this, ...
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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.