DaveWentzel.com All Things Data
XML in SQL Server
I have strong feelings about XML in the database obviously. I don't know much about XML at all so my opinion isn't worth much though. But I'm trying to learn. Hopefully this Wiki will provide you with some of my findings.
XML can cause performance issues in a few different ways. The XMLParser is required to manipulate XML and this requires CPU cycles and memory that can be used for other tasks.