November 2010
Intermediate to advanced
1248 pages
45h 18m
English
Content preview from Microsoft® Exchange Server 2010 Inside OutBecome 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 logs
Transaction logs are the basic mechanism to capture and record transactions that occur for an ESE database. ESE uses a dual-phase commit for transactions to meet the Atomicity, Consistency, Isolation, and Durability (ACID) test. A transaction is defined as a series of database page modifications that ESE considers to be a single logical unit. All of the modifications must be permanently saved before a transaction is complete and held in the database. For example, the arrival of a new message into a user’s Inbox is represented by a number of different page modifications. The message header might occupy one page, the contents could be held in other pages, and the message might be shared with a number of different users including ...
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