[DataType] string [Description] The creation parameters that must be specified when creating a column of this data type. Each creation parameter is listed in the string, separated by a comma in the order they are to be supplied. For example, the SQL data type DECIMAL needs a precision and a scale. In this case, the creation parameters should contain the string “precision, scale”. In a text command to create a DECIMAL column with a precision of 10 and a scale of 2, the value of the CreateFormat column might be DECIMAL({0},{1})” and the complete type specification would be DECIMAL(10,2). [ColumnName] 
CreateParameters