Related Terms. A Rapid Application Development (RAD) system developed by Borland International, Inc. Delphi is similar to Visual Basic from Microsoft, but whereas Visual Basic is based on the BASIC programming language, Delphi is based on Pascal.
A parameter is a numerical value that states something about the entire population being studied. For example, we may want to know the mean wingspan of the American bald eagle. This is a parameter because it is describing all of the population. Parameters are difficult if not impossible to obtain exactly.
The function declaration defines its parameters. A parameter is a variable which takes on the meaning of a corresponding argument passed in a call to a function. An argument represents the value you supply to a function parameter when you call it. The calling code supplies the arguments when it calls the function.