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  • The PostgreSQL contrib tree
    ---------------------------
    
    This subtree contains tools, modules, and examples that are not
    maintained as part of the core PostgreSQL system, mainly because
    they only address a limited audience or are too inelegant to be
    sold as an official feature.  That, however, does not preclude
    their usefulness.
    
    Each subdirectory contains a README file with information about the
    module.  Most items can be built with `gmake all' and installed
    with `gmake install' in the usual fashion, after you have run the
    `configure' script in the top-level directory.  Some directories
    supply new user-defined functions, operators, or types.  After you
    have installed the files you need to register the new entities in
    the database system by running the commands in the supplied .sql
    file.  For example,
    
    	$ psql -d dbname -f module.sql
    
    See the PostgreSQL documentation for more information about this
    procedure.
    
    
    Index:
    ------
    
    array -
    	Array iterator functions
    	by Massimo Dal Zotto <dz@cs.unitn.it>
    
    btree_gist -
    	Support for emulating BTREE indexing in GiST
    	by Oleg Bartunov <oleg@sai.msu.su> and Teodor Sigaev <teodor@stack.net>
    
    chkpass -
    	An auto-encrypted password datatype
    	by D'Arcy J.M. Cain <darcy@druid.net>
    
    cube -
    	Multidimensional-cube datatype (GiST indexing example)
    	by Gene Selkov, Jr. <selkovjr@mcs.anl.gov>
    
    dbase -
    	Converts from dbase/xbase to PostgreSQL
    	by Ivan Baldo, lubaldo@adinet.com.uy
    
    dblink -
    	Allows remote query execution
    	by  Joe Conway, joe.conway@mail.com
    
    earthdistance -
    	Operator for computing earth distance for two points
    	by Hal Snyder <hal@vailsys.com>
    
    findoidjoins -
    	Finds the joins used by oid columns by examining the actual
    	values in the oid columns and row oids.
    	by Bruce Momjian <pgman@candle.pha.pa.us>
    
    fulltextindex -
    	Full text indexing using triggers
    	by Maarten Boekhold <maartenb@dutepp0.et.tudelft.nl>
    
    fuzzystrmatch -
    	Levenshtein, metaphone, and soundex fuzzy string matching
    	by Joe Conway <joseph.conway@home.com>, Joel Burton <jburton@scw.org>
    
    intarray -
    	Index support for arrays of int4, using GiST
    	by Teodor Sigaev <teodor@stack.net> and Oleg Bartunov
    	<oleg@sai.msu.su>.
    
    ipc_check -
    	Simple test script to help in configuring IPC.
    	FreeBSD only, for now.
    
    isbn_issn -
    	PostgreSQL type extensions for ISBN (books) and ISSN (serials)
    	by Garrett A. Wollman <wollman@khavrinen.lcs.mit.edu>
    
    lo -
    	Large Object maintenance
    	by Peter Mount <peter@retep.org.uk> 
    
    mSQL-interface -
    	mSQL API translation library
    	by Aldrin Leal <aldrin@americasnet.com>
    
    mac -
    	Support functions for MAC address types
    	by Lawrence E. Rosenman <ler@lerctr.org>
    
    miscutil -
    	PostgreSQL assert checking and various utility functions
    	by Massimo Dal Zotto <dz@cs.unitn.it>
    
    mysql -
    	utility to convert MySQL schema dumps to SQL92 and PostgreSQL
    	by Thomas Lockhart <lockhart@alumni.caltech.edu>
    	   Max Rudensky <fonin@ziet.zhitomir.ua>
    	   Valentine Danilchuk <valdan@ziet.zhitomir.ua>
    
    noupdate -
    	trigger to prevent updates on single columns
    
    oid2name - 
    	maps numeric files to table names
    	by B Palmer <bpalmer@crimelabs.net>
    
    oracle -
    	converts Oracle database schema to PostgreSQL
    	by Gilles Darold <gilles@darold.net>
    
    pg_controldata -
    	Dump contents of pg_control (database master file)
    	by Oliver Elphick <olly@lfix.co.uk>
    
    pg_dumplo -
    	Dump large objects
    	by Karel Zak <zakkr@zf.jcu.cz>
    
    pg_logger -
    	Stdin-to-syslog gateway for PostgreSQL
    	by Nathan Myers <ncm@nospam.cantrip.org>
    
    pg_resetxlog -
    	Reset the WAL log (pg_xlog) to recover from crash or format change
    	by Tom Lane <tgl@sss.pgh.pa.us>
    
    pgbench -
    	TPC-B like benchmarking tool
    	by Tatsuo Ishii <t-ishii@sra.co.jp>
    
    pgcrypto -
    	Cryptographic hash functions
    	by Marko Kreen <marko@l-t.ee>
    
    retep -
    	tools to build retep tools packages
    	by Peter T Mount <peter@retep.org.uk>
    
    rserv -
    	replication server
    	by Vadim B. Mikheev <vadim4o@email.com>
    
    rtree_gist -
    	Support for emulating RTREE indexing in GiST
    	by Oleg Bartunov <oleg@sai.msu.su> and Teodor Sigaev <teodor@stack.net>
    
    seg -
    	Confidence-interval datatype (GiST indexing example)
    	by Gene Selkov, Jr. <selkovjr@mcs.anl.gov>
    
    spi -
    	Various trigger functions, examples for using SPI.
    
    start-scripts - 
    	Scripts for starting the server at boot time.
    	
    string -
    	C-like input/output conversion routines for strings
    	by Massimo Dal Zotto <dz@cs.unitn.it>
    
    tips/apache_logging -
    	Getting Apache to log to PostgreSQL
    	by Terry Mackintosh <terry@terrym.com>
    
    tools -
    	Assorted developer tools
    	by Massimo Dal Zotto <dz@cs.unitn.it>
    
    unixdate -
    	Conversions from integer to datetime
    	by Thomas Lockhart <lockhart@alumni.caltech.edu>
    
    userlock -
    	User locks
    	by Massimo Dal Zotto <dz@cs.unitn.it>
    
    vacuumlo -
    	Remove orphaned large objects
    	by Peter T Mount <peter@retep.org.uk>
    
    xml -
    	Storing XML in PostgreSQL
    	by John Gray <jgray@azuli.co.uk>