April 2002
Beginner
672 pages
14h 43m
English
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Summary
In this chapter, you began your exploration of ADO.NET's data-management objects. Here's what you learned:
The DataReader (OleDbDataReader or SqlDataReader) is great at retrieving data quickly and efficiently. Because it only provides forward-only, read-only access to data (and in many cases, you must retrieve columns in a particular order), it can make your work a little harder when coding. But you will find that the performance benefits are well worth the extra coding you may have to do. A DataSet is made up of one or many DataTable objects, and you can set relationships between these data tables. You may also want to add primary keys to each data table so that you can search within the tables later on.
You can use a DataRelation object ...
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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.