On The Fly
With relation to computer technology, “on the fly” describes activities that develop or occur dynamically rather than as the result of something that is statically predefined. For instance, the page content sent to the user from a Web site can be developed on it on the basis of dynamic factors such as hours of a day, the time and date can be seen.The Web server mainly calls an application program to produce the “on-the-fly” page that is to be given back. But there are several techniques for on-the-fly page development which include the use of cookies, the server side which include Microsoft’s Active Server Pages, and PHP. A page created on the fly may have its own URL but this is not necessary which contains all data on which the page depends upon.
