The document provides an overview of web services concepts suitable for a Class XII audience, covering topics such as HTML, XML, HTTP, domain names, URLs, websites, web browsers, web servers, and web hosting. It explains web scripting languages and distinguishes between client-side and server-side scripting. Additionally, it introduces Web 2.0, emphasizing user collaboration and information sharing on the internet.

1. Introduction to Web services
CLASS: XII(PYTHON)

2. INDEX
1. WWW,HTML,XML
2. Hyper Text Transfer Protocol (HTTP)
3. Domain Names
4. URL
5. Website, Web browser, Web Servers; Web
Hosting
6. Web Scripting –
a) Client side (VB Script, JavaScript, PHP)
b) Server side (ASP, JSP, PHP)
7. Web 2.0 (for social networking)

3. WWW(WORLD WIDE WEB)
Stands for "World Wide Web." It is an internet service which allows a
particularly configured server computer to distribute documents across the
internet in a standard way.The WWW is a collection of millions of files stored
on thousands of computers all around the world.

4. HTML( Hypertext Transfer Protocol)
It Stands for "Hypertext Markup Language." HTML is the language used to create
webpages. "Hypertext" refers to the hyperlinks that an HTML page may contain.
"Markup language" refers to the way tags are used to define the page layout and
elements within the page.

5. XML
It is a metalanguage.The full form of XML is Extensible Markup Language. It is used
to define documents with a standard format that can be read by any XML-
compatible application. The language can be used with HTML pages and can be
used to create markup languages for specific applications.

6. HTTP(Hypertext Transfer Protocol)
HTTP is the protocol used to transfer data over the web. It is part of the Internet
protocol suite and defines commands and services used for transmitting webpage
data.

7. Domain Names
A domain name is a unique name that identifies a website. A domain name is your
website name. A domain name is the address where Internet users can access your
website. A domain name is used for finding and identifying computers on the
Internet.

8. URL
Stands for "Uniform Resource Locator." A URL is the address of a specific webpage
or file on the Internet.It is also known as web address. It is used to specify
addresses on the World Wide Web. A URL is the fundamental network
identification for any resource connected to the web.

9. Website
A Web site is a collection of Web pages. A website is a set of data and information
about a particular subject which is available on the internet.

10. Web browser
A web browser is a software program that allows a user to locate, access, and display
web pages. Browsers are used primarily for displaying and accessing websites on the
internet

11. Web Servers
A web server is a system that delivers content or services to end users over the
internet. The most simple definition is that a web server runs a website by returning
HTML files over an HTTP connection.

12. Web Hosting
A Web host is an organization that sells or leases memory space on its servers. Web
hosting is typically done in a data center, which provides services to clients that
enable them to publish websites on the Internet.

13. Web Scripting
A scripting language is a programming language designed for integrating and
communicating with other programming languages. Some of the most widely used
scripting languages are JavaScript, VBScript, PHP, Perl, Python, Ruby, ASP.
Types of scripting:
Client side (VB Script, JavaScript, PHP)
Server side (ASP, JSP, PHP)

14. Web 2.0
It refers to the second generation of the World Wide Web that focused on the ability
for people to collaborate and share information online.