Data can be stored sequentially or randomly in files. With sequential storage, data is arranged in order and accessing a record requires moving through all preceding data, whereas with random storage, data can be placed anywhere and devices can directly access any record. Magnetic tapes use sequential access as they can only read data in order, while most other storage like hard disks leverage random access for faster retrieval of any piece of information.

2. Sequential & Random Access
Data in files can be stored in either sequential or random access.
Data stored sequentially means it is stored on the media one record after
the other in order.
The device must move through all information up to the location where it is
attempting to read or write.
Sequential file access is much slower than random file access
Magnetic tapes use sequential file access

3. Sequential & Random Access
Data in files can be stored in either sequential or random access.
Random access means that data is stored anywhere on the media.
The device can jump directly to the location where it is attempting to read or
write.
Random access is much faster than sequential file access
Most storage devices other than tape use
random access

4. Sequential & Random Access
Sequential
Random