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	Tree structure - Wikipedia, the free encyclopedia
		A tree structure is a way of representing the hierarchical nature of a structure in a graphical form.
		It is named a "tree structure" because the graph looks a bit like a tree, even though the tree is generally shown upside down compared with a real tree; that is to say with the root at the top and the leaves at the bottom.
		In graph theory, a tree is a connected acyclic graph (or sometimes, a connected directed acyclic graph in which every vertex has indegree 0 or 1).
	en.wikipedia.org /wiki/Tree_structure (598 words)

	Tree data structure - Wikipedia, the free encyclopedia
		In computer science, a tree is a widely-used computer data structure that emulates a tree structure with a set of linked nodes.
		In graph theory, a tree is a connected acyclic graph.
		There are many different ways to represent trees; common representations represent the nodes as records allocated on the heap with pointers to their children, their parents, or both, or as items in an array, with relationships between them determined by their positions in the array (e.g., binary heap).
	en.wikipedia.org /wiki/Tree_data_structure (458 words)

	B-Trees
		To ensure that the height of the tree is as small as possible and therefore provide the best running time, a balanced tree structure like a red-fl tree, AVL tree, or b-tree must be used.
		B-trees are balanced trees that are optimized for situations when part or all of the tree must be maintained in secondary storage such as a magnetic disk.
		Since the "branchiness" of a b-tree can be large compared to many other balanced tree structures, the base of the logarithm tends to be large; therefore, the number of nodes visited during a search tends to be smaller than required by other tree structures.
	www.bluerwhite.org /btree (2387 words)

	Life of the Forest - The National Arbor Day Foundation
		As stewards of the earth's trees, it's helpful for us to know about the growth processes of trees, their role in the forest world, and how we can improve their quality.
		Trees are a renewable natural resource that can continue to provide beauty and useful products for generations to come.
		All of a tree trunk's growing is done in a thin layer of living cells — the cambium — that surrounds the wood.
	www.arborday.org /trees/RingsMain.html (316 words)

	Tree Structure Detection and Visualization Technical Report
		This report describes a mechanism for automatic detection of tree data structures in ANSI C programs and subsequent visualization of the dynamic tree structure using a 3-dimensional graphics display.
		For larger trees, such textual representations are not easily read and may be inadequate for the programmer to visualize the tree mentally.
		Trees are displayed using spheres for nodes and cylinders for connections between nodes and children.
	www.cs.nmsu.edu /~jeffery/alamo/tr97_7 (2114 words)

	Using Nodes in a Tree Structure to provide Record-Level Security
		This article is a follow-up to A Flexible Tree Structure in which I explained how to create a hierarchical tree structure from only 3 database tables.
		This design can hold any number of structure (tree) types, with any number of levels and any number of nodes, and also has the ability to enable levels to be added or deleted from a structure without requiring that the whole structure be rebuilt.
		A tree structure is a hierarchy of NODES to which other objects known as LEAVES can be attached.
	www.marston-home.demon.co.uk /Tony/uniface/recordsecurity.html (597 words)

	Preston L. Bannister { random memes } » Structure editors, IDEs, and another Lisp flashback
		Tree structure editors were once all the rage in the Lisp community (and elsewhere).
		In practice tree structure editors turned out to be rather tedious to use.
		Back in college, after we had all played with structure editors for a time, one member of our group identified the source of our discomfort by noting that many simple common operations in a text editor were much more complicated in a structure editor.
	www.bannister.us /weblog?p=192 (671 words)

	Download the Tree Structure
		The structure of the tree is contained in a single XML element, the element.
		Note that the current tree structure is by no means complete, but in some branches it does reach out to the actual leaves of the tree (this is denoted by a special LEAF attribute on NODE elements).
		People will then be able to download tree structures for particular groups of organisms, while picking and choosing the data to be included along with each node.
	working.live.tolweb.org /tree/home.pages/downloadtree.html (548 words)

	tree structure - a Whatis.com definition (Site not responding. Last check: 2007-09-17)
		A tree structure is an algorithm for placing and locating files (called records or keys) in a database.
		In that case, the tree is said to have an unbalanced or asymmetrical structure.
		The trees shown here are simple enough to be rendered in two dimensions, but with some large databases, three dimensions are needed to clearly depict the structure.
	whatis.techtarget.com /gDefinition/0,294236,sid44_gci509887,00.html (371 words)

	Tree Structure (Site not responding. Last check: 2007-09-17)
		A tree structure is a hierarchically ordered, multi-level system (see also holarchy) that can be represented by an inverted tree.
		Each node in the tree structure branches off to sub-nodes (see also holon) that branch off to other sub-nodes, and so on.
		The tree has the ability to grow and expand, and is therefore a dynamic, flexible, and open-ended system.
	capita.wustl.edu /ME567_Informatics/concepts/tree.html (72 words)

	Two-Level Tree Structure for Fast Pointer Lookup
		The conservative garbage collector described here uses a 2-level tree data structure to aid in fast pointer identification.
		The rest of this discussion focuses on the two level data structure used to map the high and middle bits to the block descriptor.
		In the case of 64 bit addresses, this picture is complicated slightly by the fact that one of the index structures would have to be huge to cover the entire address space with a two level tree.
	www.hpl.hp.com /personal/Hans_Boehm/gc/tree.html (571 words)

	Planning the Directory Tree Structure
		Structuring the upper layers of the Directory tree is important to the general foundation of the tree and the tree performance.
		Organizing upper layers of the tree by the geographical structures in your organization also makes it easier for users to remember where their commonly-accessed network resources are.
		The general framework of the Directory tree is established through the Organizational Unit objects that represent the logical divisions, departments, and workgroups in your organization.
	www.novell.com /documentation/nw4/guideenu/data/hh41zcft.html (2789 words)

	Tree Data Structure (Site not responding. Last check: 2007-09-17)
		A tree is another data structure that you can use to store pieces of information (i.e., a bunch of elements).
		Here, we'll consider elements that each have a key (that identifies the element) and a value (that is the data for an element).
		For example, suppose a tree stores elements with keys (which are letters) and values (which are counts, like the frequency of the letter).
	www.cs.bu.edu /teaching/cpp/tree/bst/slides (83 words)

	Binary Tree
		Another reason to use a tree is because trees make some operations more efficient (we'll discuss that at some later time).
		A tree whose elements have at most 2 children is called a binary tree.
		Removes something from the tree (how the tree is reorganized after a removal depends on the kind of tree).
	www.cs.bu.edu /teaching/cs112/spring-2000/binary-tree (1053 words)

	Embedding SQL Tree Structure in HTML Forms (Site not responding. Last check: 2007-09-17)
		Due to the complexity of information associated with the structures, data is stored in a DBMS with more than 80 tables.
		The secret of embedding the SQL tree structure is in the definition of parameter name.
		The process of building SQL tree and converting it into SQL expression is as follow: (note: x in a parameter is a notation for a serial number 1, 2,, 3, etc.)
	ndbserver.rutgers.edu:8888 /NDB_page/help.html (1130 words)

	Simple Structural Analysis
		A tree is an appropriate data structure for representing input text because the meaning of that text is generally described in terms of its components, and a tree embodies the ``component of'' relationship.
		The set of allowable tree nodes is described by a set of LIDO rules, specified in a file of type.lido.
		The tree structure is normally chosen to minimize the number of distinct symbols representing node classes.
	ece-www.colorado.edu /~ecen5523/HW/phrase.html (674 words)

	What is tree structure? - A Word Definition From the Webopedia Computer Dictionary (Site not responding. Last check: 2007-09-17)
		A type of data structure in which each element is attached to one or more elements directly beneath it.
		Trees are often called inverted trees because they are normally drawn with the root at the top.
		Inverted trees are the data structures used to represent hierarchical file structures.
	www.webopedia.com /TERM/f/tree_structure.html (258 words)

	javax.swing.tree (Java 2 Platform SE v1.4.2)
		Defines the requirements for a tree node object that can change -- by adding or removing child nodes, or by changing the contents of a user object stored in the node.
		is a general-purpose node in a tree data structure.
		You use these classes and interfaces if you want control over how trees are constructed, updated, and rendered, as well as how data associated with the tree nodes are viewed and managed.
	java.sun.com /j2se/1.4.2/docs/api/javax/swing/tree/package-summary.html (282 words)

	The Tree Structure of XML Queries
		A query language for XML should be able to take advantage of this tree structure to express conditions that combine hierarchy and sequence, and it should be possible to preserve the containment and order found in the original document, even when they are not explicitly expressed in the query.
		The underlying tree structure for an XML document corresponds to a context free grammar; specifically, the context free grammar specified by the DTD or schema.
		If an XML document is a tree structure corresponding to a grammar, it comes as no surprise that the relationships found in an XML document are similar to those encountered in transformational linguistics.
	www.w3.org /1999/10/xquery-tree.html (4504 words)

	Insert data into a binary tree structure - Delphi Pascal Source code
		A binary tree, because of the way the data is structured allows the record to be found in only a few operations.
		Binary trees are balanced only when the data input is random, and the less random, and more orderly the original input to the tree the more the tree structure flattens out and becomes like a straight line data structure rather than a branching tree structure.
		A 'node' on a binary tree consists of two pointers to other 'nodes' (a left and a right pointer, designated by 'l' and 'r' in the example) and a data segment.
	www.awitness.org /delphi_pascal_tutorial/source/insert_binary_tree.html (2604 words)

	The k-D Tree Structure (Site not responding. Last check: 2007-09-17)
		The central data structure in PKDGRAV is a tree structure which forms the hierarchical representation of the mass distribution.
		To build the k-D tree, we start from the root-cell and bisect recursively the cells through their longest axis, so that an equal number of particles lie in each sub-volume, and that quadrupole moments of cells are kept to a minimum (see Figure 2).
		Pointers are unnecessary since each node in the tree can be indexed so that the finding of children, parent and sibling nodes are simple bit-shift operations.
	www-hpcc.astro.washington.edu /faculty/marios/papers/perform/node3.html (277 words)

	JavaScript Tree - COOLjsTree - free cross-browser folding menu
		There can be several trees on a single page, and every tree can have completely separate format and/or structure.
		This means that tree will follow the flow of design: it can be centered, left or right aligned.
		That means user will see tree with same expanded and selected nodes when he/she will go to another page with the same tree ("same" means tree with the same name with in same Internet domain).
	javascript.cooldev.com /scripts/cooltree (908 words)

	How to Use Trees
		for the tree, and then sets it up so that at most one tree node at a time can be selected.
		specifies methods for getting a particular node of the tree, getting the number of children of a particular node, determining whether a node is a leaf, notifying the model of a change in the tree, and adding and removing tree model listeners.
		The interfaces that the default tree model expects its tree nodes to implement, and the implementation used by the default tree model.
	java.sun.com /docs/books/tutorial/uiswing/components/tree.html (2919 words)

	Build an XML-based Tree Control with JavaScript
		Tree controls provide a hierarchical view of data and XML provides a way to structure data hierarchically, so viewing XML data as a tree structure is a natural fit.
		fter writing the Build an Object-Oriented Tree Control Using JavaScript article, it occurred to me that using XML as the data source for the tree would be a natural fit.
		Tree controls provide a hierarchical view of data and XML provides a way to structure data hierarchically, so it would seem that viewing XML data as a tree structure would be a natural fit.
	www.devx.com /getHelpOn/Article/11874 (298 words)

	Java Pro Magazine - How to Climb a B-tree (Site not responding. Last check: 2007-09-17)
		We could save considerably on disk access time (and memory space) if we had an indexing structure that allowed us to read only part of the index in to memory at a given time and still do all the necessary adding, deleting, and searching that we need an index to do.
		The B-tree is ideal for large indexes in databases because its structure is particularly suitable for external sorting.
		The result will be that you'll not only have a library of code that will let you experiment with the powerful B-tree data structure, but you'll be well on your way to creating a persistent version that you can incorporate in your own Java object-oriented databases.
	www.fawcette.com /javapro/2002_01/magazine/features/rgrehan (395 words)

	Microsoft Windows XP - Tree
		Graphically displays the directory structure of a path or of the disk in a drive.
		The structure displayed by tree depends upon the parameters you specify on the command line.
		If you do not specify a drive or path, tree displays the tree structure beginning with the current directory of the current drive.
	www.microsoft.com /resources/documentation/windows/xp/all/proddocs/en-us/tree.mspx (195 words)

	Print - ESE's B-tree Database Structure
		This structure is similar to an upside-down tree, starting with a root node and building from there.
		B-tree technology typically doesn't specify the depth and width of these B-tree structures (other than they must be balanced), which means that a B-tree can extend to an unlimited number of levels (called tree depth) and width (called the fan-out, degree, or branching factor).
		A uniform tree depth across the entire structure (every leaf node or data page is equidistant from the root node) means database performance is consistent and predictable.
	www.windowsitpro.com /Articles/Print.cfm?ArticleID=20757 (782 words)

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