Ken North has released the interview we did in May at TechEd 2004 in San Diego.
You can find it at: http://www.sqlsummit.com/People/MRys.htm.
Here is the announcement from Ken:
"SQL Server 2005: Integrating SQL, XML, and XQuery"
This is a 15-minute streaming video interview with Michael Rys:
"Michael discusses SQL Server 2005 support for XQuery, SQL/XML and the SQL:2003 standard. He discusses b-tree, quadtree, and r-tree indexes and pluggable and selectable indexing techniques for XML documents. He also comments about the evolution of XQuery."
I am not really saying anything special about Quad-trees or R-trees for XML indices. Our indices currently are based on B-trees. If we every provide other indexing mechanisms, they could be fit into the existing framework.
Note that since the interview, we have made some changes to our mid-tier XQuery story.
Enjoy!