Introduction to Web Services

 

HTML(Hypertext Markup Language)

HTML is the language that helps in creating and designing web content. It is a markup language. It has a
collection of tags and attributes for defining the layout and structure of the web page. A HTML document has the extension .htm or .html.

XML (EXtensible Markup Language)

XML is a markup language like HTML. It is designed to carry or store data. Unlike HTML, it does not have predefined tags. It is possible to define new tags
in XML.

WWW (World Wide Web) 

The World Wide Web was invented by a British scientist, Tim Berners-Lee in 1989. World Wide Web, which is also known as a Web, is the universe of the information available on the internet. It is a collection of websites or web pages stored in web servers and connected to local computers through the internet. These websites contain text pages, digital images, audios, videos, etc. Users can access the content of these sites from any part of the world over the internet using their devices such as computers, laptops, cell phones, etc.

Web page 

A web page is an electronic document designed using HTML. It displays information in textual or graphical form. It may also contain downloadable data files, audio files, or video files. Traversal from one webpage to another web page is possible through hyperlinks. 

A web page can be classified into two types:

1. Static web page: A web page that displays the same kind of information whenever a user visits it, is known as a Static web page.
   
   
2. Dynamic web page: A web page that displays different information each time whenever a user visits it, is known as Dynamic web page.

 Website

A collection of web pages that are accessible through a single domain known as a website. A website has multiple webpages providing information about a particular entity.

Web Browser

A web browser is a software program to navigate the web pages on the internet. A browser interprets the coding language of the web page and displays it in graphic form. A web browser allows anyone to access the web without even knowing commands used in software languages to design a web page.  

Internet works on the client-server model. A web browser is a client that requests the information from the web server. The web server sends the information back to the client. The web address of the webpage written on the address bar tells the web browser which page to access.

Web Server

A web server is a WWW server that responds to the requests made by web browsers/clients.

URL (Uniform resource locator) 

The web address of the web page written on the address bar of the browser is known as the uniform resource locator (URL). A URL is a formatted text string used to identify a network resource on the Internet.
Network resources are files that can be plain Web pages, text documents, graphics, downloadable files,
services, or programs. Every network resource on the web has a unique URL. 

Domain Name  

A server identified by a set of characters known as Domain name. It is an address part of any URL from which we access all resources available on that server.

Web Hosting

Web hosting is the process of uploading/saving the web content on a web server to make it available on
WWW. In case an individual or a company wants to make its website available on the internet, it should be hosted on a web server.