I always wanted to learn XML and its usage. My friend and fellow MVP Jacob Sebastian is expert in XML, so if you are interested in XML please visit his blog here. If you are interested in performance optimization for XML Data type in SQL Server following article is must read for you.
Performance Optimizations for the XML Data Type in SQL Server 2005 by Shankar Pal, Babu Krishnaswamy, Vasili Zolotov, and Leo Giakoumakis – Microsoft Corporation
Articles covers following subjects.
You can download the same article in word format from here.
Reference : Pinal Dave (http://blog.SQLAuthority.com)