October 2010
Intermediate to advanced
1920 pages
73h 55m
English
Content preview from ASP.NET 4 Unleashed
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Disconnected Data Access
The ADO.NET Framework supports two models of data access. In the first part of this chapter, you saw how you can use the SqlConnection, SqlCommand, and SqlDataReader objects to connect to a database and retrieve data. When you read data from a database by using a SqlDataReader object, an open connection must be maintained between your application and the database.
In this section, we examine the second model of data access supported by ADO.NET: the disconnected model. When you use the objects discussed in this section, you do not need to keep a connection to the database open.
This section discusses four new ADO.NET objects:
• DataAdapter—
Enables you to transfer data from the physical database to the in-memory database ...
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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.