A blog by Jose Barreto, a member of the File Server team at Microsoft.
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Here are some additional notes on "SQL Server 2008 Indexing Best Practices" I took while attending an advanced class on SQL Server taught by Kimberly Tripp (http://sqlskills.com/AboutKimberlyLTripp.asp).
Please note that, although these notes were taken during the class, I might have added some of my own (mis)interpretation :-). Always check your facts on Books Online (I try to provide links when applicable). As with anything else you get from a blog, never use any of this in production before you thoroughly validate it a test environment. Please keep in mind that some of those will be hard to follow without the right pre-requisite knowledge and the right context. Reading the post from top to bottom will help.
The best index
Find a balance
OLTP x OLAP
Clustered index keys
Lookups vs. Table Scans
Kimberly has published a related presentation at http://sqlskills.com/resources/conferences/Tripp_SPR302_PreconferenceSession_UPDATED_VERSION.pdf
PingBack from http://www.brentozar.com/archive/2009/04/day-with-the-experts-decks-online/