November 2006
Intermediate to advanced
1232 pages
34h 10m
English
book
Microsoft® SQL Server™ 2005 Administrator's Companion
by Edward Whalen, Marcilina Garcia, Burzin Patel, Stacia Misner, Victor Isakov
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Summary
In this chapter, we have learned the importance of database integrity and how to use the built-in capabilities of SQL Server 2005 to help ensure that the data in a database remains accurate and correct. The use of database constraints to enforce data integrity is the preferred method.
Domain, entity, and referential integrity are enforced with the various constraint types available in SQL Server:
PRIMARY KEY Constraints
UNIQUE Constraints
FOREIGN KEY Constraints
CHECK Constraints
NULL and NOT NULL Constraints
DEFAULT Definitions
All of these constraints were described in this chapter along with examples of how to create and modify each, using T-SQL and using SQL Server Management Studio. Following is a consolidated example of a table creation ...
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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.