The WWW used by the Internet/Intranet connects Web servers on networks to Web Browsers (clients) by using HTTP (Hyper Text Transfer Protocol). Web Browsers enable access to a specific resource on a specific Web Server by specifying URL's (Uniform Resource Locators). Web Servers send the requested resource (typically an HTML page) back to the requesting Web Browser. Normally, Web Servers send HTML (Hyper Text Markup Language) data, so that Web Browsers can display the contents of the HTML data in an appropriate format.
In this way, the use of Web Browsers enables the information published by the connectable server to be accessed. At present, Web Browsers enable the information to be freely accessed, and can be used as the environment for executing a business application.
When only the HTML document is put on the server, static information can be opened to the public. However, it cannot be processed to access to the data base on an indispensable server for the business and to generate the HTML document dynamically only by static information. The main interface of Web is shown below.
CGI (Common Gateway Interface)
ISAPI (Internet Server Application Programming Interface)
In the business application, it is necessary to make the application in Web Server by using these interfaces. The application executed on this Web Server is called Web application.
