
26 Fundamentals of Computer Programming and IT
employees of an organisation. Now, to look
for employee number 100’
s information, the
computer will have to start with employee
number 1 and then go past 2, 3, and so on,
until it finally comes to 100. The sequen-
tial access method is quite simple than other
methods but searching for data is slow.
Direct Access • : Direct access, also known as
random access, means that the computer can
go directly to the location, where the data that the user wants, is stored. The most common direct access
storage devices are magnetic disk and optical disk. In these devices, the data is stored as a numbered sequence ...