Raw information transmitted to the computer environment is called data. Everything that can be entered, stored and processed by a computer is called data. The main purpose of data storage is to be able to access and use the stored data in the future. All programs that do not use the database can be run immediately (process and exit the data).
In this type of procedure, it is not possible for us to access the data later and take action later. Because all programs run on a memory called RAM. Since RAM memory is a piece of hardware that can be electrically written to and deleted, all information in it will be deleted when the computer is turned off.
To do this, the program must store the data on the hardware called the hard disk. In october to RAM memory, hard drives also store data by mechanical and magnetization. Therefore, it does not require electricity. Therefore, since it does not require any power, it can protect data even in the event of a power outage.