2009

The seats of the Ferris wheel are children of the wheel, which is in turn a child of the
base and support objects, as shown in the following hierarchy.
Descendants Children and all of the children’s children of a parent object.
In the figures, all the objects are descendants of object 1.
Hierarchy Collection of all parents and children linked together in a single
structure.
Root Single parent object that is superior to all other objects in the hierarchy.
All other objects are descendants of the root object. In the figures, Object 1 is
the root.
Subtree All the descendants of a selected parent. In the figure below, the
Rotational Hub, Ferris Wheel, and Seats represent the subtree under the Support
object.
Hierarchies | 3333