You have an XML schema collection named Sales.InvoiceSchema. You need to declare a variable of the XML type named XML1. The solution must ensure that
XML1 is validated by using Sales.InvoiceSchema.
Which code segment should you use? To answer, type the correct code in the answer area.

Answer: See the explanation

Explanation:
DECLARE @XML1 XML(Sales.InvoiceSchema)

http://msdn.microsoft.com/en-us/library/ms176009.aspx