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en.wikipedia.org/wiki/Tree_(data_structure)

The root node has depth zero, leaf nodes have height zero, and a tree with only a single node (hence both a root and leaf) has depth and height zero. Conventionally, an empty tree (tree with no nodes, if such are allowed) has height −1. A ' subtree ' of a tree T is a tree consisting of a node in T and all of its descendants in T.

www.thefreedictionary.com/leaf+node

Define leaf node. leaf node synonyms, leaf node pronunciation, leaf node translation, English dictionary definition of leaf node. Noun 1. leaf node - the small swelling that is the part of a plant stem from which one or more leaves emerge node phytology, botany - the branch of biology...

www.quora.com/What-is-a-non-leaf-node-in-a-binary-tree

A non leaf node in a binary tree is a node that has at least 1 child node . It can also have 2 children . A non leaf node is also called as an internal node . A leaf node is one without any children .

use-the-index-luke.com/sql/anatomy/the-leaf-nodes

Figure 1.1 illustrates the index leaf nodes and their connection to the table data. Each index entry consists of the indexed columns (the key, column 2) and refers to the corresponding table row (via ROWID or RID).Unlike the index, the table data is stored in a heap structure and is not sorted at all.

www.thespruce.com/what-is-a-node-2539765

The base of a bud, leaf, twig, or branch is always attached to a node, so this is one easy way to find them. Even without visible buds or leaves, you can tell where the node of a twig is by some signs that are visible only at a node:

en.wikipedia.org/wiki/Binary_tree

To add a new node after leaf node A, A assigns the new node as one of its children and the new node assigns node A as its parent. Internal nodes. The process of inserting a node into a binary tree. Insertion on internal nodes is slightly more complex than on leaf nodes. Say that the internal node is node A and that node B is the child of A.

www.geeksforgeeks.org/write-a-c-program-to-get-count-of-leaf-nodes-in-a-binary...

A node is a leaf node if both left and right child nodes of it are NULL. Here is an algorithm to get the leaf node count. getLeafCount(node) 1) If node is NULL then return 0. 2) Else If left and right child nodes are NULL return 1. 3) Else recursively calculate leaf count of the tree using below ...

dba.stackexchange.com/.../what-are-the-differences-between-leaf-and-non-leaf-pages

non-leaf = internal index node (contains only the column data that is part of the index) Every index is comprised of a single root node, possibly several layers of intermediate internal tree nodes and a single layer of leaf nodes. In a clustered index, the leaf nodes are effectively the table.

www.reference.com/science/plant-node-9b3f3138f7df1051

A plant node, also known as a leaf node or stem node, is the part of the plant that causes leaf growth. Nodes are located along the plant's stem. Finding plant nodes is important to effective pruning maintenance and also to regenerating plants by planting new roots.

www.thespruce.com/plant-nodes-and-internodes-3269548

In winter, the leaves of many plants will lack leaves, and some nodes will never grow stems, but still, in these cases, you can usually find buds at a node on living wood. Sometimes, however, the buds will have died and fallen off at that node. Sometimes buds are there but might be minuscule and easy to miss (such as in sourwood) or buried in the wood and invisible.