Hi there,
drivers are a very powerful tool and concept in Blender 3D ; they allow the user to link (almost ) any property of an object to a property of another object, thus making possible some very complex animations.In this video tutorial we give an example of how flexible parenting through using drivers can be.
Here is the link to this tutorial :
https://www.youtube.com/watch?v=a7KPmEYvFdg
Thanks for watching