June 2015
Intermediate to advanced
1800 pages
70h 6m
English
book
Microsoft SQL Server 2014 Unleashed
by Ray Rankins, Paul Bertucci, Chris Gallelli, Alex T. Silverstein
Content preview from Microsoft SQL Server 2014 UnleashedBecome 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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Read Committed Snapshot Isolation
When the READ_COMMITTED_SNAPSHOT database option is set to ON, sessions running with the Read Committed isolation mode use row versioning to provide statement-level read consistency. When this database option is enabled and a transaction runs at the Read Committed isolation level, all statements within the transaction see a snapshot of the data as it exists at the start of the statement.
When the READ_COMMITTED_SNAPSHOT option is enabled for a database, SQL Server maintains versions of each row that is modified. Whenever a transaction modifies a row, an image of the row before modification is copied into a page in the version store, which is a collection of data pages in tempdb. If multiple transactions modify ...
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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.