Sequential
When data is stored in a sequence or a queue. There is an order, it is a fifo order. If you are first in the queue you are first out of the queue. It is usually used in tape storage.
Tape
Simplicity- not complex to implement, but it is slow because you have to go through all of the files in order and no direct access.
Random Access
There is no fraction to it. It is only called 'random access' because potentially you can access the data in any order you want. You can access any piece of data you want.
ADVANTAGE- direct address and data can be stored anywhere you want.
DISADVANTAGE- it takes a lot of computing power and storage to keep track of where files are.
ADVANTAGE- direct address and data can be stored anywhere you want.
DISADVANTAGE- it takes a lot of computing power and storage to keep track of where files are.