Which of the following is not a function of the Operating System___?

Which of the following is not a function of the Operating System___?

مندرجہ ذیل میں سے کون سا آپریٹنگ سسٹم کا کام نہیں ہے؟
Explanation

 Database management is not a function of the Operating System.

An Operating System is a program on which application programs are executed.