Final answer:
The name, type of the column 'Salary', and creation date of a SAS data set are found in the descriptor portion, which stores the metadata about the data set.
Step-by-step explanation:
The name of the data set, the type of the column 'Salary', and the creation date of a SAS data set can all be found in the descriptor portion of a SAS data set.
The descriptor portion contains metadata about the data set, such as the name, type, and length of variables, as well as the data set's creation date. Conversely, the data portion contains the actual data values for each of the variables.