September 2004
Intermediate to advanced
710 pages
24h 25m
English
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Scope
Constraints may be applied at the column-level or the table-level:
- Column-level constraints
Declared as part of a column definition and apply only to that column.
- Table-level constraints
Declared independently from any column definitions (traditionally, at the end of a CREATE TABLE statement) and may apply to one or more columns in the table. A table constraint is required when you wish to define a constraint that applies to more than one column.
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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.