Write a short note on file organization and access, Operating System

Assignment Help:

Write a short note on file organization and access.

There are three methods to access files

  • 1Record Access
  • 2Sequential Access
  • 3Random Access

The record access method is dependent on the physical medium on which the file is stored. Magnetic tape is sequential by it's extremely nature to read a record you must start at the beginning of the tape and sequentially read every record until you get to the one you want. With disks, obviously random access is possible. It is the same as the difference between audio compact disc and audio cassette. With audio tape you have to begin at the beginning and run the tape forward until you get to the song you want to hear. With compact disc you are able to play the songs in random order or go directly to the track you want to hear.

Though, not only ought to the medium permit for random access to records, however the file itself must support going directly to the record you want to retrieve. This feature of the file is called as file organization.

 


Related Discussions:- Write a short note on file organization and access

How virtual memory is implemented, How Virtual memory is implemented Vi...

How Virtual memory is implemented Virtual memory can be implemented along with Segmentation and Paging

What is segmentation?, SEGMENTATION In a memory management system that ...

SEGMENTATION In a memory management system that is properly a programmer views a program to be collection of program components called as segments . Every segment is a logical

Explain internal file structure, Internal file structure All disk I/O i...

Internal file structure All disk I/O is performed in units of single block, and all blocks are the similar size. It is unlikely that the physical record size will exactly match

NETWORK OPERATING SYSTEM, explain about design issues of network operating ...

explain about design issues of network operating system

Explain the different multithreading models, Question 1: a) Briefly exp...

Question 1: a) Briefly explain each of the following terms: (i) Distributed systems. (ii) Real time systems. (iii) Multiprocessor. b) What is the impo

Homework, Write an application that does the following:(1) fill an array wi...

Write an application that does the following:(1) fill an array with 50 random integers; (2) loop through the array, displaying each value, and count the number of negative values;

Can you give me assistance on my operating system assignment, Can you give ...

Can you give me assistance on my operating system assignment?

Explainoptimal page replacement in detail, Optimal page replacement An...

Optimal page replacement An optimal page replacement algorithm has the least page fault rate of all algorithms. The algorithm states that put back the page that will not be us

Define state that process must obtain all resources it needs, Before procee...

Before proceeding with its execution, every process must obtain all the resources it needs is called Hold and wait

Determine the task of the pass ii in a two-pass assembler, Determine the ta...

Determine the task of the Pass II In a two-pass assembler Synthesize the target program is the task of the Pass II

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd