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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Q&A
| Q1: | How will I know what tables, columns, and properties to have for my database? |
| A1: | Draw a picture of your database to help you see the relationships in the data. Know as much as you can about what you need to accomplish with the database before you even start adding the database and tables. Sample data can often give you ideas about the tables you will need and the constraints on the columns, but in the real world, these aren't set in stone. That's when the ALTER DATABASE and ALTER TABLE commands come in handy. |
| Q2: | What's the difference between a primary key and a foreign key? |
| A2: | The primary key is referenced by a foreign key. The primary key can not be a NULL value. A foreign key can be NULL or it can be linked to the primary key. A table ... |
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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.