Web Application ?
A web application is an application that is accessed over a network such as the Internet or an intranet.
Static vs Dynamic Web Application
- Static Web (flat page) page that is delivered to the user exactly as stored.
- Dynamic Web is page that generated at the time of access by a user or change as a result of interaction with the user.
Web Content Technologies
• Ajax
• ASP
• ASP.NET
• CSS
• ColdFusion
• Java
• JavaScript
• Perl
• PHP
• Ruby
Purpose of Dynamic Web Site
• Content Management System (CMS) - Dynamic website is the best way to update website regularly.
• E- commerce site - The dynamic website is cheaper, easier and the best option to sell your products online.
• Members database - Dynamic website allows people to manage information through out the websites by using your administration interface.
• Deliver information to a wider audience - Dynamic websites helps in storing of information in database.
Client Side Scripting
• Client-side scripting offers an easy way to provide additional functionality and flexibility to your project.
• The process with client-side scripting is: – the user requests a Web page from the server – the server finds the page and sends it to the user – the page is displayed on the browser with any scripts running during or after display
• Example: A JavaScript drop down menu
Server Side Scripting
• The server sends pages to the user/client on request. The process is:
– the user requests a Web page from the server
– the script in the page is interpreted by the server creating or changing the page content to suit the user and the occasion and/or passing data around
– the page in its final form is sent to the user and then cannot be changed using server-side scripting
• Example: Website and the user clicks to show the products information that retrieve information from database.
Web Server
• A Web server is a program that, using the client/server model to deliver Web content that can be accessed through the Internet.
