Search results
Results from the WOW.Com Content Network
In particular, a B-tree: keeps keys in sorted order for sequential traversing; uses a hierarchical index to minimize the number of disk reads; uses partially full blocks to speed up insertions and deletions; keeps the index balanced with a recursive algorithm; In addition, a B-tree minimizes waste by making sure the interior nodes are at least ...
The order or branching factor b of a B+ tree measures the capacity of interior nodes, i.e. their maximum allowed number of direct child nodes. This value is constant over the entire tree. For a b-order B+ tree with h levels of index: [citation needed] The maximum number of records stored is =
In computer science, tree traversal (also known as tree search and walking the tree) is a form of graph traversal and refers to the process of visiting (e.g. retrieving, updating, or deleting) each node in a tree data structure, exactly once. Such traversals are classified by the order in which the nodes are visited.
Let T be a node of an ordered tree, and let B denote T's image in the corresponding binary tree. Then B's left child represents T's first child, while the B's right child represents T's next sibling. For example, the ordered tree on the left and the binary tree on the right correspond: An example of converting an n-ary tree to a binary tree
Creating a one-node tree. Continuing, a '+' is read, and it merges the last two trees. Merging two trees. Now, a '*' is read. The last two tree pointers are popped and a new tree is formed with a '*' as the root. Forming a new tree with a root. Finally, the last symbol is read. The two trees are merged and a pointer to the final tree remains on ...
The restrictions make insertion and deletion a little more complicated -- but, in return, the B-tree can guarantee very fast searches. Some nodes in some n-ary trees have only 1 or 2 children. B-trees are constructed so every internal node has at least L children. Some n-ary trees do not have all the leaves on the same level.
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
Binary trees may also be studied with all nodes unlabeled, or with labels that are not given in sorted order. For instance, the Cartesian tree data structure uses labeled binary trees that are not necessarily binary search trees. [4] A random binary tree is a random tree drawn from a certain probability distribution on binary trees. In many ...