NameColumn Element (ASSL)
Identifies the column that provides the name of the parent element.
If the KeyColumns collection of DimensionAttribute contains a single KeyColumn element representing a key column with a string data type, the same DataItem values are used as default values for the NameColumn element.
For more information about the DataItem type, including a table of Analysis Services Scripting Language (ASSL) objects and properties of the DataItem type, see DataItem Data Type (ASSL).
In Parent-Child dimensions the NameColumn Element (ASSL) used comes from the child element not from the parent; if the Usage Element (DimensionAttribute) (ASSL) value, on the parent object, is set to Parent then the NameColumn Element (ASSL) is not used.