They are both storage devices
William James
Usually the hard drives are considered secondary. The RAM (Random Access Memory) is the primary memory.
There is two difference between them. 1. The not null constraint is by default added to primary key, it means, primary key attribute cannot accept null values, whereas, the attribute declared as unique can accept null values. It is the major difference between the two. 2. Secondly, we can have only one primary key in a relation, whereas, multiple attributes can be declared unique at the same time.
Computer memory is categorized into primary and secondary memory. While primary memory is the main memory of the computer which is used to store data or information temporarily, whereas secondary memory refers to external storage devices that are used to store data or information permanently.
Intenal memory is only primary memory. The term secondary memory is used for External storage like hard disk etc.
No, Because secondary takes more time as compared to primary. primary takes less time as compared to secondary.
primary memory consist of RAMsecondary memory consist of ROM
Well for mac you can only back up your data when you have a secondary storage hard drive, for windows it gives you more space to download and to use it, basic
You have to keep on remebering the memory
Primary memory is temporary and volatile, used by the computer to store data and information that is currently being accessed or processed. It includes RAM and cache memory. Secondary memory, on the other hand, is non-volatile and used for long-term storage of data and programs, like hard drives and solid-state drives.
If my memory serves me well its less than 2.0 ohms for the primary and between 10,000 -11,000 ohms for the secondary, Mike
Addresses of virtual memory is found in descriptor table lies in primary memory but the content of the page is stored in secondary memory.