This method returns the column name of the data value of a name mapping contained in a DM_LogicalDataSpec value.
Method syntax
>>-logData..DM_getNmpValCol--(--nmpName--)---------------------><
Function syntax
>>-DM_getNmpValCol--(--logData--,--nmpName--)------------------><
The return value is of type VARCHAR(300)
IDM1213E: One or more of the required parameters are NULL. To add a taxonomy, the parameters name, tabName, childCol, and parentCol are required.