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  B-tree

  In computer science, a B-tree is a tree data structure that keeps data sorted and allows searches, insertions, deletions, and sequential access in logarithmic amortized time. The B-tree is a generalization of a binary search tree in that more than two paths diverge from a single node. Unlike self...
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  Heap

  In computer science, a heap is a specialized tree-based data structure that satisfies the heap property: if B is a child node of A, then key(A) ≥ key(B). This implies that an element with the greatest key is always in the root node, and so such a heap is sometimes called a max-heap. (Alternatively,...
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  R-tree

  R-trees are tree data structures that are similar to B-trees, but are used for spatial access methods i.e., for indexing multi-dimensional information; for example, the (X, Y) coordinates of geographical data. A common real-world usage for an R-tree might be: "Find all museums within 2 kilometres ...
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  B+ tree

  In computer science, a B+ tree (BplusTree) is a type of tree which represents sorted data in a way that allows for efficient insertion, retrieval and removal of records, each of which is identified by a key. It is a dynamic, multilevel index, with maximum and minimum bounds on the number of keys in...
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  Hash tree

  In cryptography and computer science Hash trees or Merkle trees are a type of data structure which contains a tree of summary information about a larger piece of data – for instance a file – used to verify its contents. Hash trees are an extension of hash lists, which in turn are an extension of...

• Trie

  In computer science, a trie, or prefix tree, is an ordered tree data structure that is used to store an associative array where the keys are usually strings. Unlike a binary search tree, no node in the tree stores the key associated with that node; instead, its position in the tree shows what key...

• B# Tree

  A B# tree is similar to a B+ tree with rotations allowed among brothers only (immediate siblings). Insertion Procedure: Find the node where the new key is to be inserted. If that node is full we must try to perform a rotation with one of our brothers. If all of our brothers are at capacity we must...

• Binary tree

  In computer science, a binary tree is a tree data structure in which each node has at most two children. Typically the first node is known as the parent and the child nodes are called left and right. In type theory, a binary tree with nodes of type A is defined inductively as TA = μα. 1 + A × α × α...