Difference between Phone and Chat

Parameter	Phone	Chat
Description	A telephone, or phone, is a telecommunications device that permits two or more users to conduct a conversation when they are too far apart to be heard directly.	Chat is a kind of communication over the Internet that offers a real-time transmission of text messages from sender to receiver. Chat messages are generally short in order to enable other participants to respond quickly. Thereby, a feeling similar to a spoken conversation is created, which distinguishes chatting from other text-based online communication forms such as Internet forums and email
Requirements	Telephone Number is Required from telecom service provider.	Email Address is Required (Digital Address) from valid mail server uses a program called Internet Relay Chat (IRC) that runs on an IRC Server.
Easiness	it is true that talking is, for most purposes, easier than writing	Generally more difficult than, talking because writing tends to

Difference Between Newspaper and Blog

Parameter	Newspaper	Blog
Description	A newspaper is a serial publication containing news, other informative and usually advertising. A newspaper is usually printed on relatively inexpensive, low-grade paper such as newsprint. The news organizations that publish newspapers are themselves often metonymically called newspapers	A blog (a truncation of the expression weblog) is a discussion or informational site published on the World Wide Web and consisting of discrete entries ("posts") typically displayed in reverse chronological order (the most recent post appears first)
Publication	Daily, Weekly, Monthly	No Limit
Print Media	Paper	CMS Tools Like Blogger from Google and Wordpress from Wordpress.
Content	General-interest newspapers typically publish news articles and feature articles on national and international news as well as local news. The news includes political events and personalities, business and finance, crime, severe weather, and natural disasters; health and medicine, science, and technology; sports; and entertainment, society, food and cooking, clothing and home fashion, and the arts. Typically the paper is divided into sections for each of those major groupings (labeled A, B, C, and so on, with pagination prefixes yielding page numbers A1-A20, B1-B20, C1-C20, and so on)	A typical blog combines text, images, and links to other blogs, Web pages, and other media related to its topic. Most blogs are primarily textual, although some

Difference between Mail and Email

Parameter	E-Mail	Mail
Description	Electronic mail is a method of exchanging digital messages from an author to one or more recipients. Email operates across the Internet or other computer networks.	The mail or post is a system for physically transporting documents and other small packages, as well as a term for the postcards, letters, and parcels themselves.
Address	It uses Electronic address to send or receive messages.	Physical Address is used to send or receive messages.
Route	No Specific route is followed	Specific Route is Followed
Stamps	Uses Digital Stamps	Physical Stamps are used
Cost	Very Much Cheap	Costlier than Email.
Time	E-Mails are delivered in very short durations from seconds to minutes.	Delivery is slow and may be in days or months.
Multiple Recipients	You can send copies of letters to multiple recipients at no extra cost.	You have to send individual letter to each person and will have to pay postage for each letter that you send. This is also a Time Consuming Process.

Difference between Paging and Segmentation

Characteristics	Paging	Segmentation
Definition	Paging breaks physical memory Into fixed-sized blocks called frames and logical memory into blocks of the same size called pages. When a process is to be  executed, its pages are loaded into any available memory frames from the backing store. The backing store is divided into fixed sized blocks that are of the same size as the memory frames.	Segmentation is the division of computer’s primary memory into segments or sections. In segmentation, a reference to a memory location includes a value that identifies a segment and an offset within that segment.
Length	All pages are divided into equal length.	The size of a memory segment is generally not fixed and may be as small as a single byte.

Tricks to Protect System from Viruses

Here are some simple tricks that you can use to protect your computer system from Viruses

                     1)      Use of Licensed Antivirus

                     2)      Method to install Antivirus.

                     3)      Regular Update of Antivirus

                     4)      Disable Auto Run Option

                     5)      Operating System

                     6)      Never Use any Device without Scanning.

                     7)      Firewall

Use of Licensed Antivirus: Never use trail or Cracked version of any Antivirus Software because many of the features are not available with such antivirus and whenever a Virus attack occurs it simply report you and take no action.

How to Install Antivirus: This is the most important point that most of the people miss to explain that what the correct way to install an Antivirus Software is. Here are the simple rules:

               a)       Always install Antivirus on Freshly installed Operating System Only.

Classification of Database Management System

Database Management System can be classified on several DBMS criteria.

A) On the Basis of Data Models.

Data model is a collection of high level data description that hides many low level storage details. A data Model has following three Components:
1) A Structural Part that consist of a set of rules according to which database is constructed.
2) A Manipulating Part That defines type of operations that are allowed on data.
3) A set of integrity rules that ensures that data is correct.
The Data Models are further divided into Three Categories: 

I) Object Base Data Models: Object based data models defines a database in terms of objects, their properties, and their operations .Objects of same behavior and structure belongs to a class and classes are organized into hierarchies. The operations of each class are specified in terms of predefined procedures called methods. Commonly used object based data models are:

What is Distributed Data Processing (DDP) ?

Distributed Data Processing (DDP)

It is a configuration in which many geographically dispensed or distributed independent computers are connected by means of computer networks. In this type of configuration Programs, data and other resources are shared among several users who are geographically far away from one another. This provides the facility of better resource use to the end users.

This approach is different from centralized system because computers are installed at different locations and each of them performs independent data processing. Each computer in DDS is designed for a specific task.
 
Advantages of Distributed Data Processing

1) In Distributed data processing resources can be used in centralized or non centralized manner.

2) Smaller or complex jobs can be easily handled. Small jobs are done with the help of Personal Computers whereas complex jobs are performed by complex systems.