May 2002
Beginner
408 pages
9h 10m
English
Content preview from Sams Teach Yourself ADO.NET in 24 Hours
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The DataRelation Object
As you've seen in Hour 2, “Working with DataSets and DataTables,” the ADO.NET DataSet object can almost precisely mirror data returned from the data source. This includes all the data relations and constraints present in the database as well as the data itself!
In other words, within the DataSet itself, you can create relationships, just like the ones you saw earlier inside SQL Server. After the relationships are set up, you can retrieve relationship-based information without having to write a database query.
 | New Functionality with the DataSet! In addition to giving you great power and flexibility when working with data retrieved ... |
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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.