The primary differences between variable types are where they exist, how long they exist, and where their values are stored. These considerations are referred to as a variable's scope.
The table below describes the ColdFusion Express variables by their scope.
|Local||The page on which it is created.|
|Query||The page on which it is created.|
|Form||The action page that's associated with a form.|
|URL||The target page for the hyperlink.|
|Cookie||All browser sessions.|
|Application||The specific application for which it is created.|
You will learn more about scope on an as needed basis throughout this book.