May 2002
Beginner
408 pages
9h 10m
English
Content preview from Sams Teach Yourself ADO.NET in 24 HoursBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Comparing DataSet Values Against the Database for Optimistic Concurrency
To do optimistic concurrency correctly (with 100% data integrity), you really should compare all the original data column's data values against what is in the database for your update to be considered valid (not violating optimistic concurrency). Perhaps another user has updated another column's data values for a particular data row (like the ContactName column's data value) and, at the same time, you have updated some other column's data values (like the ContactTitle column's data value). The resulting data row (after both of the updates) will have potentially mismatched data values for this particular data row (the ContactName data value doesn't correspond to the ContactTitle ...
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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.