Tree structure

Tree structure is a way of looking at data. It works by starting at the top with one item and then breaking it down into smaller pieces. For example, let's say you are looking at the parts of a car. The top level would be the car itself and its parts would be the engine, wheels, transmission, etc. Each of those parts could be broken down even further into even smaller parts, like cylinders and gears. This is what a tree structure looks like.