What Is Root Node?

A root node is a topmost or bottommost node in any data structure. It's like a tree trunk but with information instead of wood! The root node is at the top if you're looking at a tree above. If you're looking at it from below, it's at the bottom. It can be confusing for people who are unfamiliar with trees, so we recommend being sure to explain this upfront. The root node is the first node in a tree. It's also the first step toward your crowning glory! The root node is usually considered the top of a tree if it's represented from the top and bottom from the bottom up. So when looking at a tree, the first node is always at the top, but since this is an inverted tree (the roots are above ground), we'll say it's at the bottom of our inverted image. When we think about trees, it's important to remember that the root node is the first and parent node. It means that it has no parent and only has children nodes. It differs from other data structures, where a node might have both parent and child nodes. The root node is essential because it helps us understand how our tree data structure works. A tree is a data structure that can store information about hierarchical relationships. It is often stored information about people, animals, or organizations. The root node is the first parent node in a tree data structure. Generally, nodes may have parent and children nodes, but because the root note is the first node, it only has children nodes. It can be said that all other nodes are descendants of this node. The tree structure can be seen as a family tree where each person has family members and so on into infinity.