September 2010
Intermediate to advanced
1704 pages
111h 8m
English
book
Microsoft® SQL Server 2008 R2 Unleashed
by Ray Rankins, Paul Bertucci, Chris Gallelli, Alex T. Silverstein
Content preview from Microsoft® SQL Server 2008 R2 Unleashed
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Backing Up the Transaction Log
As discussed, the full and bulk-logged recovery models cause transactions to be written to the database’s transaction log. These transactions should be backed up periodically for two main reasons. First, the transaction log backups can be used in case of a media failure to restore work completed in the database. These backups limit your exposure to data loss and enable you to reapply changes that have occurred.
The second reason for backing up the transaction log is to keep the size of the log manageable. Keep in mind that SQL Server is a write-ahead database management system (DBMS) and thus writes most changes to the transaction log first, before it updates the actual data files. This type of DBMS is great for ...
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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.
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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.