CGI Meaning & Definition
CGI can refer to:
Common Gateway Interface
Common Gateway Interface (CGI) is an interface specification for transferring information between WWW servers and external databases and information sources known as CGI programs (sometimes referred to as CGI scripts). The specifics of how the script is executed is determined by the server. A CGI program is any program designed to accept and return data that conforms to the CGI specification and is the most common way for web servers to interact dynamically with users.
For example, when a user fills out a form on a Web page and submits it, it needs to be processed by an application program. The Web server passes the form information to a small application program that then processes the data and sends a confirmation message back. This passing of data back and forth between the server and application is the CGI. It's a mechanism that is part of the Hypertext Transfer Protocol (HTTP).
A disadvantage of CGI is that a new process is started each time a CGI script is executed. For busy websites, this can noticeably slow down the server. Using the server's API, such as ISAPI or NSAPI, can be more efficient but difficult to implement. Another popular solution is using Java's servlets.
Computer-generated imagery (CGI) is the creation of still or animated visual content with computer software. Computer graphics are used to create images in art, printed media, video games, films, television, commercials, and simulators. These images can be dynamic or static, two-dimensional (2D) or three-dimensional (3D). CGI is most commonly used to refer to 3D computer graphics used to create characters, scenes, and special effects in films and games.
CGI is cheaper than using physical methods for creating effects such as hiring extras for crowd scenes and constructing complicated miniatures. In some circumstances, it's humanly impossible to create the visuals needed without CGI.
Well-known movies that have extensive CGI use include:
- Avatar (2009)
- Jurassic Park (1993)
- Star Wars (1977)
- The Matrix (1999)
- King Kong (2005)
- Interstellar (2014)
- Inception (2010)
Stay up to date on the latest developments in Internet terminology with a free newsletter from Webopedia. Join to subscribe now.
From A3 to ZZZ we list 1,559 text message and online chat abbreviations to help you translate and understand today's texting lingo. Includes Top... Read More »Huge List of Computer Certifications
Have you heard about a computer certification program but can't figure out if it's right for you? Use this handy list to help you decide. Read More »
Computer architecture provides an introduction to system design basics for most computer science students. Read More »Network Fundamentals Study Guide
Networking fundamentals teaches the building blocks of modern network design. Learn different types of networks, concepts, architecture and... Read More »The Five Generations of Computers
Learn about each of the five generations of computers and major technology developments that have led to the computing devices that we use... Read More »