October 2006
Intermediate to advanced
464 pages
16h 11m
English
Content preview from Inside Microsoft® SQL Server™ 2005, Fourth EditionBecome 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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Transaction Processing
No matter what concurrency model you’re working with, an understanding of transactions is crucial. A transaction is the basic unit of work in SQL Server. Typically, it consists of several SQL commands that read and update the database, but the update is not considered final until a COMMIT command is issued (at least for an explicit transaction). In general, when I talk about a modification operation or a read operation, I am talking about the transaction that performs the data modification or the read, which is not necessarily a single SQL statement. When I say that writers will block readers, I mean that as long as the transaction that performed the write operation is active, no other process can read the modified data. ...
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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.