Usage Element (MiningModelColumn) (ASSL)
Describes how the associated column in the parent MiningStructure is used.
The value of this element is limited to one of the strings listed in the following table.
The column is a key column.
The column is an input column.
The column is a prediction column.
The column is a prediction column only.
The column is not used by the model.
The enumeration that corresponds to the allowed values for Usage in the Analysis Management Objects (AMO) object model is MiningModelColumnUsages.