The IRLE notes that blue collar and manual workers can be replaced for an average cost of $2,000, while the average cost for managerial and professional employees may be as high as $7,000.
By defining a Node * typedef, it is assured that all the variables will be structure pointer types, or say, that each variable is a pointer type pointing to a structure type.
A typed xml column (or variable or parameter) refers to one that is bound to an XML schema collection within SQL Server. A schema collection is a set of one or more XML schemas that determine the permitted structure of the XML instances stored within that column.