About the Illustration.Diagram xml Column
The Diagram column of the Illustration table stores diagrams as XML diagrams and shows how a specific manufacturing task is performed. These diagrams are referred to in the manufacturing instructions stored in the ProductModel.Instructions column.
This column is untyped XML. Therefore, there is no schema associated with this column.
Run this query for a sample XML instance:
USE AdventureWorks; GO SELECT Diagram FROM Production.Illustration;