Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
File Organization
There are three types of file organization used in practice. Let us consider the example of a dictionary. The dictionary contains listing of English words sorted alphabetically. The top left and right hand corners provide the starting and the ending of each page. Let us assume that the information of the dictionary is stored on a disk. Now suppose, we want to find a word, say, “Computer”. This can be done in the following ways:
Sequential Access: We start from the first word and check whether or not it is the desired word. We continue checking till the required word is found. This method implies searching the whole file from beginning to end and is known as sequential processing. Time required to locate a specific word will obviously depend on its location from the starting point.
Indexed Sequential Access: To locate “Computer”, we can also search only the top corner words to first identify which particular page the word belongs to. After knowing the specific page, we can then search sequential till the required word is found. In this method, firstly an index has been searched followed by a complete sequential search. This method is known as indexed sequential method and is much faster compared to sequential method and is very commonly used in practice.
Random Access: Suppose each word is assigned a specific sequence number and “Computer” was 25th from the beginning. Then we could go directly to the 25th location on the disk without any searching. This type of processing is known as Random Access and the response in this method will be very fast. However, the concept of allocating a unique number, to each data item, becomes difficult as the complexity increases.
Satellite Transmission: Satellites use microwave frequencies and techniques. Satellites used for message transmission (as opposed to those, which travel around the earth on st
fully detailed of cpu modes of operation
Types of Printers 1. Impact printers The impact printers produce the image through a mechanism of striking on the stationary. 2. Line Printer This type of printer
How do I change file permissions? Every time I execute chmod commands it tells me permission denied.
Question 1 What is fragmentation? Question 2 Discuss the various service classes defined by integrated services Question 3 What are congestion? .Mention two algori
Computer Help Inc. is a computer timesharing, and software development and sales company. It has been successful in attracting clients for both sides of its business. Staff count
differance between multiaccess and multitasking
The architecture of the x86 processors forces with the use of memory segments to direct the information, the size of these segments is of 64kb. The cause of being of these segments
Online Searching: The real difference between manual searching and online searching lies, according to William A. Katz, in the mechanics and the jargon of the latter. However,
QUESTION (a) Outline the five main steps in the Web Design Process (b) Draw an annotated diagram explaining how data is transmitted to web servers during a standard form sub
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd