Common Gateway Interface

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An Introduction of CGI (Common Gateway Interface)

CGI stands for Common Gateway Interface. It is a protocol meant for interfacing the external software application having a server of information. This information server is known as web server. To understand the concept of CGI we must know how it functions to help the server to perform its work. The CGI, a standard protocol allows the server to communicate the request of a client, while browsing for an external application. In nutshell we can say, the CGI is a standard way to pass the request of a web browser for application of a program and in return it helps the server to provide all the required data or information to the user. Therefore a question may arise, how this job is done? Let us discuss about it. Suppose a web user wants to fill a form through a web page. Foe this she has to fill up the form on the page of a web and then send it and thereafter it is processed by program of application. Here the web server passes the information of the filled form to a program of application. This application program starts processing the entire data or information and in many occasions sends back the message of confirmation to the sender.

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	An Overview of CGI The Common Gateway Interface or CGI is a standard way to interface external application of program. Here the function of the server like HTTP or any other web server is also important. Any text file including HTML document is static in nature that means the text files do not change. But on the other hand a CGI program is executed within a time-frame and as a result the CGI program provides dynamic information. It is most important for us to know how exactly the CGI program functions. Now let us start with an example. Suppose you want to hook up any individual UNIX data base in the WWW or World Wide Web. You want to do this to allow the web users all over the world to get it according to their requirement. You can do this by using CGI program. Foe this you have to create a CGI program, which the daemon of web can execute to pass the data or information to the engine of database. Apart this, the CGI program also help to receive back the information to produce before the client. This is a perfect example of gateway. more..


	Category Listings An Introduction of CGI (Common Gateway Interface) An Overview of CGI The Specifics of CGI Program Implementation of CGI What Common Gateway Interface (CGI) is? The Common Uses of CGI How CGI Routine Works? Fast CGI; A Variation of the Original Form Things to Remember While Using CGI Uses of CGI Scripts Advantages and Disadvantages of CGI Script Flash and CGI How to Get Information from the Server Using CGI How to Send the Document Back to the Client CGI Unlocks Back-end Application