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	Btree Implementation in Ingres
		The btree index level is similar to isam's index, except that the index points to index or leaf pages instead of to data pages.
		When to Use Btree ----------------- Btree is the most versatile storage structure, as it supports both exact match and range retrievals and includes a dynamic index, so that frequent remodification may not be necessary.
		Btree is a good storage structure to use in any of these cases: o The table is growing at a rapid rate.
	ariel.ucs.unimelb.edu.au /~yuan/Ingres/us_39363.html (1705 words)

	[ZODB-Dev] BTree bug on a 64 bit platform.
		At heart, the BTree code is missing an overflow check, and loses bits due to an implicit cast from C long to C int.
		The BTree C code is intended not to generate compiler warnings, and a good C compiler on a box where sizeof(long) > sizeof(int) should be able to help catch mistakes like this.
		BTW, the BTree code emphatically does not intend that you be able to "create a BTree on a 64bit platform using 64bit int keys", if by BTree you meant an IO or II BTree.
	mail.zope.org /pipermail/zodb-dev/2004-November/008200.html (1032 words)

	Xapian: Internal Source Documentation: xapian-core: Btree Class Reference
		Btree needs to gain a new level to insert more items: so split root block and construct a new one.
		Tags may be of arbitrary length (the Btree imposes a very large limit).
		The result is true iff the specified key is found in the Btree.
	www.xapian.org /docs/sourcedoc/html/classBtree.html (2795 words)

	A_BTree (Site not responding. Last check: 2007-11-02)
		If you delete_rows() from the btree while you are iterating and this caused a page to be deleted or you update_rows() and this causes a page to split, all new readers will be blocked and the writer waits until all readers are done before the page delete or split can be completed.
		This creates an interesting and unusual condition regarding the persistence of the data in the btree, while one thread is iterating over the rows in a btree it will see changes that were made by other threads as soon as the writer thread releases the write lock.
		This was done to enhance the performance of the A_BTree class which stores data in the A_Buffer class and writes that data to disk using the A_FileStore class.
	www.sevainc.com /arunadb/a_btree.html (6469 words)

	UNIX man pages : btree () (Site not responding. Last check: 2007-11-02)
		The btree data structure is a sorted, balanced tree struc- ture storing associated key/data pairs.
		Searches, insertions, and deletions in a btree will all complete in O lg base N where base is the average fill factor.
		The btree access method routines may fail and set errno for any of the errors specified for the library routine dbopen(3).
	rene.ma.utexas.edu /cgi-bin/man-cgi?btree (886 words)

	BTree (Buoy Documentation)
		BTree provides methods for modifying the tree by adding or removing nodes.
		A BTree is a wrapper around a JTree and its associated classes, which together form a powerful but also very complex API.
		Scroll the BTree's parent BScrollPane to ensure that a particular node is visible.
	buoy.sourceforge.net /docs/buoy/widget/BTree.html (1377 words)

	SQLite CVSTrac
		Each BTree is identified by the index of its root page.
		The maximum payload fraction for a LEAFDATA tree is always 100% (or 255) and it not specified in the header.
		Each btree pages is divided into three sections: The header, the ** cell pointer array, and the cell area area.
	www.sqlite.org /cvstrac/fileview?f=sqlite/src/btree.c (11348 words)

	org.apache.derby.impl.store.access.btree
		In data only locking the key for all locks whether obtained in the BTree or in the base table is the address of the base table row.
		In the BTree case the address of the base table row (RowLocation) is always the last column of the leaf index entry (IndexRows).
		In both the BTree and the Heap, deletes are first executed by marking a "deleted" bit.
	db.apache.org /derby/papers/btree_package.html (1328 words)

	Parquete: BTree class Reference (Site not responding. Last check: 2007-11-02)
		Referenced by BTree(), BTreeCompactor::build_orth_tree_add_block(), contour_add_block(), height(), operator=(), and save_bbb().
		Referenced by BTree(), BTreeCompactor::build_orth_tree_add_block(), contour_add_block(), operator=(), save_bbb(), and width().
		Referenced by BTree(), BTreeCompactor::build_orth_tree_add_block(), BTreeCompactor::compact(), contour_add_block(), operator=(), save_bbb(), and xloc().
	www.ece.cmu.edu /~ggall/parquet/classBTree.html (591 words)

	BTree (Apache Xindice API v1.1b4)
		A BTree is a bit flexible in that it can be used for set or map-based indexing.
		Also, the Variable Magnitude attribute means that the btree attempts to store as many values and pointers on one page as is possible.
		This means that you can create a btree where the pointers actually point to the root of a separate btree being managed in the same file.
	xml.apache.org /xindice/api/org/apache/xindice/core/filer/BTree.html (1268 words)

	Berkeley DB Reference Guide: Selecting an access method (Site not responding. Last check: 2007-11-02)
		The Hash and Btree access methods should be used when logical record numbers are not the primary key used for data access.
		Locality of reference means that accessing one particular key in the Btree implies that the application is more likely to access keys near to the key being accessed, where "near" is defined by the sort order.
		There is little difference in performance between the Hash and Btree access methods on small data sets, where all, or most of, the data set fits into the cache.
	www.sleepycat.com /docs/ref/am_conf/select.html (1029 words)

	Virtual Machinery Products - BTree
		BTrees are also useful in J2EE - you can read more here and you can download the code associated with this discussion here.
		A full toolkit with the ability to examine, compress and repair datasets is also available (this is a Java application but can be used on datasets created by both Smalltalk and implementations for the Java platform).
		Of course such BTrees are only suitable for use in situations where there is no requirement to modify the data contained in the tree.
	www.virtualmachinery.com /btreeprod.htm (615 words)

	share*it! - A service of Digital River - Virtual Machinery BTree - Commercial Distribution license - Virtual Machinery ...
		Virtual Machinerys BTree is a set of classes which implement a BTree in Java.
		The index file is much smaller than the combined total of all the indices since it holds only the first index to each page in the index file.
		Btree implemented using RMS as underlying data storage mechanism.
	shareit.com /product.html?productid=300030598&...&DELIVERY=EML (636 words)

	[Dev] btree deletes (Re: Data outside the box)
		"Classic BTrees" do rebalance, keeping all buckets at least half full (provided there are enough keys in the entire tree to fill half a bucket).
		We're in an interior BTree node, and are looking at only a tiny fraction of all the keys that exist.
		When searching a bucket, it's much more likely (than when searching a BTree node) that the key is present, so testing __cmp==0 isn't a systematic waste of cycles.
	lists.osafoundation.org /pipermail/dev/2002-December/000358.html (1872 words)

	a_table (Site not responding. Last check: 2007-11-02)
		Each table uses two btrees, one btree holds the data (called the pkey btree) and the other btree is for transaction support (called the lock btree).
		Each table has two btrees, one to hold the data and is used as the primary key for the table (called the pkey btree) and another for transaction support (called the lock btree).
		Generally, it is best to put the lock btree in a different filestore than the pkey btree.
	www.sevainc.com /arunadb/a_table.html (3149 words)

	axion: Axion - Java Database - News
		Several changes were made to improve the performance and memory requirements of inserting data in large, densely BTree-indexed tables, in response to Malte Stenzel experiments as discussed last month.
		A critical bug that appears when deleting non-unique key values from a BTree index was discovered and patched.
		Malte's findings suggest we need to add a mechanism for purging BTree index nodes to better support very large indexes, and that some optimization for LIKE clause handling may be in order.
	axion.tigris.org /news.html (1462 words)

	JDBM JavaDoc: Class BTree
		Create a new persistent BTree with the given number of entries per node.
		Remove an entry with the given key from the BTree.
		If an entry with the same key already exists in the BTree, its value is returned.
	jdbm.sourceforge.net /doc/javadoc/jdbm/btree/BTree.html (576 words)

	The BTREE Module: Balancing a Binary Tree
		A reference to the struct will have to be stored somewhere that it can be associated with a specific tree; within our BTREE module, that would be somewhere in the tree's control structure.
		Later we will find that there are other operations that would benefit from a context; so we will add to the BTREE control structure a void* field to point to anything that may be appropriate to a particular operation.
		Our BTREE control structure will be modified by adding fields to store the number of nodes, number of leaves, shortest path length, longest path length and average path length:
	faculty.washington.edu /jstraub/dsa/btree (2876 words)

	kexi: btree.h Source File
		See comments in the source code for a detailed description 00014 ** of what each interface routine does.
		Alternative BTree implementations 00033 (examples: file based versus in-memory) can be created by substituting 00034 different methods.
		Users of the BTree cannot tell the difference.
	developer.kde.org /~howells/apidocs/kexi/html/src_2btree_8h-source.html (183 words)

	YoLinux.com Manpage: btree (Site not responding. Last check: 2007-11-02)
		gunzip: stdout: Broken pipe gunzip: stdout: Broken pipe BTREE(3) BTREE(3) NAME btree - btree database access method SYNOPSIS #include #include DESCRIPTION The routine dbopen is the library interface to database files.
		The general description of the database access methods is in dbopen(3), this manual page describes only the btree specific information.
		ERRORS The btree access method routines may fail and set errno for any of the errors specified for the library routine dbopen(3).
	www.direct-to-linux.com /cgi-bin/man2html?cgi_command=btree(3) (882 words)

	Class biscotti.collections.BTree
		Create a new BTree collection with the specified branch factor and populate it with the elements in the collection passed in.
		The user must create and pass in a Comparator object which will be used to sort objects by key as they are added to the collection.
		The branch factor cannot be changed after the BTree has been created.
	www.itunesdb.com /pro/docs/collections/biscotti/collections/BTree.html (627 words)

	btree (Site not responding. Last check: 2007-11-02)
		Currently, the only data that is stored in the node is a void *, but I do plan on providing extensions to put arbitary sized data into the node.
		Source for the btree package as of Wed Mar 27 2001.
		The latest release is v1.0 done on Wed Mar 27 2001.
	resnet.uoregon.edu /~gurney_j/jmpc/btree.html (143 words)

	BTree
		Executes a query against the BTree and performs callback operations to report the search results.
		The pointer can be used for referencing any type of data, it just so happens that dbXML uses it for referencing pages of associated data in the BTree file or other files.
		Only BTree keys starting with the specified prefix are considered.
	exist.sourceforge.net /api/org/exist/storage/btree/BTree.html (792 words)

	Hashtable or Btree?
		I thought that a hastable of hastables or a btree of btrees would be a good way to lookup a specific url quickly by first finding the domain and then finding the matching document.
		I > thought that a hastable of hastables or a btree of btrees would be a > good way to lookup a specific url quickly by first finding the domain > and then finding the matching document.
		hash_map is not standard, and while std::map is, and probably does use a tree, it is not going to be a btree.
	www.codecomments.com /message349474.html (594 words)

	Btree.java (Site not responding. Last check: 2007-11-02)
		* This should be considerably faster than a TreeSet * * For further information on Btrees read: * Data Structures and Program Design in C * by Roberts Kruse e.a.
		ISBN 0-13-726332-5. * The books provides a fairly accurate explanation about how a Btree works and * the intracacies of programming one.
		This is the lowest left most element * @return first Element, accoring to the sequential order / public Object first() { return control.getFirst(); } /* retrieves a list string from the first element until the toElement * The list returned is excluding the toElement!
	www.xs4all.nl /~jheyning/jeroen/Btree_java.html (767 words)

	[ZODB-Dev] BTree.setdefault(), BTree.pop() (Site not responding. Last check: 2007-11-02)
		I'd like to hear people say they're going to use these in the context of BTrees first.
		Offhand, neither of these methods make particularly good sense to me for the ways BTrees are used.
		The existence of insert() was driven by a specific use case, explained in the BTrees Interfaces.py.
	mail.zope.org /pipermail/zodb-dev/2004-October/008040.html (160 words)

	The Clarion Advisor: Topspeed Driver Error Codes (Site not responding. Last check: 2007-11-02)
		Btree structure corrupt (obsolete in C5 Btree structure corrupt (discovered while splitting a page)
		Btree page size (from header) does not match size stored on disk, could result in a truncated file, run tpsfix
		Btree unpacked page size (from header) does not match size loaded from disk
	www.clarionmag.com /cmag/v1/v1n1tpserrorcodes.html (851 words)

	BTree Trial Download (Site not responding. Last check: 2007-11-02)
		So that you can see just how valuable BTree could be to you in a J2EE we are letting you download a demo EJB application based on the BTree product for free.
		This demo allows you to use a BTree as a highly efficient, small footprint data storage method on an application Server.
		It can use BTrees created by our free BTree demonstration trial (Available here) and is therefore capable of accessing millions of BTree records.
	www.virtualmachinery.com /ejbdownload.htm (212 words)

	share*it! - A service of Digital River - Virtual Machinery BTree - Corporate License - Corporate License for Virtual ...
		Exact details are provided before the order is completed.
		This license allows the Virtual Machinery BTree code to be used by any number of developers working for the company which has licensed the product.
		It also allows applications developed using the Virtual Machinery BTree code to be distributed to all users in that company.
	shareit.com /product.html?productid=300030597&...&DELIVERY=EML (640 words)

	MySQL Bugs: #12460: MEMORY engine: table is full error, btree index / 64bit
		Description: Hi, Having a MEMORY table (ENGINE=MEMORY) with an unique btree index gives a error message "Table is full" when lots of INSERTS/UPDATES are going on.
		ERROR 1114 (HY000) at line 10583: The table 'NPAS' is full The index length in the SHOW TABLE STATUS output is also odd: Rows: 5291 Avg_row_length: 21 Data_length: 126984 Max_data_length: 878515743 Index_length: 22724672354670 Does not happen with Hash and only got it reproduced on a Linux RH EL3 64bit so far.
		Portions of this website are copyright © 2001, 2002 The PHP Group.
	bugs.mysql.com /12460 (278 words)

	btree - SWiK (Site not responding. Last check: 2007-11-02)
		The contents of btree page and all pages directly attached to btree will be erased.
		Berkeley DB (libdb) is a compact, high performance programmatic toolkit that provides database functionality for both traditional and client/server applications via an API.
		database btree linux sql dbms c++ c java php python tcl … Jul 08
	swik.net /btree (166 words)

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