1. W3C = The world wide web consortium is
the main international standards organization for the world wide web founded by
tim burners lee. The consortium is made up of member organizations which
maintain full time staff for the purpose of working together in the development
of standards for the world wide web. As of 11 august 2015, the world wide web
consortium (w3c) has 391 members . W3c also engages in education and outreach
,develops software and serves as an open
forum for discussion about the web.
2. PROPRIETARY SOFTWARE = Proprietary software is software
that is owned by an individual or a company (usually the one that developed
it). There are almost always major restrictions on its use, and its source code is almost
always kept secret. Software that is not proprietary includes free software and public
domain software.
3. SHAREWARE = Shareware is a type
of proprietary software which is provided
(initially) free of charge to users, who are allowed and encouraged to make and
share copies of the program, which helps to distribute it. Shareware is often
offered as a download
from an Internet
website or as
a compact disc included with a magazine.
4. FREE SOfTWARE = Free software, software
libre, or libre software[1] is computer
software that gives users the freedom to run the software for any purpose
as well as to study, modify, and distribute the original software and the
modified versions. this includes the
freedom to redistribute the software free of charge, or
to sell it (or related services such as support or warranty) for profit.
5. FREEWARE = Freeware
is computer software
that is available for use at no monetary cost, which may have restrictions such
as redistribution prohibited, and for which source
code is not available.
6. POSTGRESQL = Postgresql manages
database access permissions using the
concept of roles . A role can be thought of as either a database user, or a
group of database users, depending on how
the role is set up. Roles can own database objects and can assign
privileges on those objects to other
roles to control who has access to which objects. Furthermore , it is possible
to grant membership in a role to another role, thus allowing the member role use of privileges assigned to the role it is member of.
7. PANGO = Pango is an open source project
dedicated to creating a Unicode framework for rendering international text. The
name Pango was created by combining the Greek prefix 'pan', meaning 'all,' with
the Japanese word 'go,' meaning 'language.'
9. LINUX = Linux is, in simplest terms, an operating system. It is the
software on a computer that enables applications and the computer operator to
access the devices on the computer to perform desired functions. The operating
system (OS) relays instructions from an application to, for instance, the
computer's processor. The processor performs the instructed task, then sends
the results back to the application via the operating system. On August 25,
1991, A science student named Linus Torvalds name this OS.
§ FEATURES OF LINUX: -
- multitasking: several programs running at the same time.
- multiuser: several users on the same machine at the same time.
- multiplatform: runs on many different CPUs, not just Intel.
- Using the virtual memory .
§ SECURITY FEATURE OF LINUX:-
§ Linux
is often treated as a highly secure operating system. The security system is in
two parts: authentication and access control. Authentication is responsible for
ensuring that a user requesting access to the system is really the user with
the account, while access control is responsible for controlling which
resources each account has access to and what kind of access is permitted.
10.
Some
Commands of Linux Opreting Systems
§ PWD
COMMAND = Pwd stands for present working directory.This commands show the
name current working directory.
§ CD
COMMAND = The cd command also known as change directory.This commands use for
change the directories in Linus Systems.
§ CAT
COMMAND = This commands show the file content in linux Systems.
§ LS
COMMAND =, Ls is a command to show the of files and directories list in Linux
Systems .
§ RM
COMMAND for use Remove the file in Linux Systems.
§ MV
COMMAND = MV (short for move) for use
moveing the file in Linux Systems .
11. PHP = PHP
Stands for Personal Home Page.PHP is an HTML-
scripting language. Much of its syntax is borrowed from C. The goal of the
language is to allow web developers to write dynamically generated pages
quickly.
12. OPEN-OFFICE = An open source office software suite, originally
based on star office. It is a successor project of openoffice.org and
integrates features and improvements from IBM lotus symphony.
13.
APACHE
TOMCAT = is an open-source web server and server
container developed by the Apache Software Foundation (ASF).
·
server container :- A server-container supports
only the server application Like ASP,JSP,PhP.
14. MOZILA = Mozila firefox is a free open
source web browser for the computer. It displays web pages written in the computer
language like html. It is made by the Mozilla foundation . It works on
all common operating systems.
15. UNICODE =is Standard for
representing the characters of all the languages of the world, including
Chinese, Japanese, and Korean,indian Etc.
16. ASCII CODE = ASCII Stands for American standars code for
information interchange. ASCII codes
represent text in computers and other devices that use text .
17. FOSS = FREE AND OPEN SOURCE SOFTWARE
{FOSS} is a computer software that can be classified as both free software and
open source software. That is , anyone is freely licensed to use , copy ,
study, and change the software in any way, and the source code is openly shared
so that people are encouraged to voluntarily improve the design of the
software.
18. TELNET
= Telnet is a protocol that allows you to connect to remote
computers (called hosts) over a TCP/IP network (such as the internet). Using
telnet client software on your computer, you can make a connection to a telnet
server.Once your telnet client establishes a connection to the remote host
,your client becomes a virtual terminal , allowing you to communicate with the
remote host from your computer .In most cases, you”ll need to log into the
remote host, which requires that you have an account on that system.
Occasionally , you can log in as guest or public without having an account.
19. WEB SCRIPTING = Web scripting is used
to create dynamic web pages. Web
scripting uses small programs that are executed based on user
interaction with a web page. There are two types of scripting .
·
Clint Side Scripting
·
Sever Side Scripting
1. Clint Side Scripting :- In client-side
scripting scripts are executed on the local computer after you have loaded
the web page.
2. Server Side Scripting:- In server-side
scripting, scripts are executed on the server before the web page is
downloaded by a client.
20. VBScript
language supports following types of operators:
§ Arithmetic Operators
§ Comparison Operators
§ Logical (or Relational) Operators
§ Concatenation Operators
