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-<!--$Id: format.so,v 10.14 2000/03/22 21:56:11 bostic Exp $-->
-<!--Copyright 1997, 1998, 1999, 2000 by Sleepycat Software, Inc.-->
-<!--All rights reserved.-->
-<html>
-<head>
-<title>Berkeley DB Reference Guide: Dump output formats</title>
-<meta name="description" content="Berkeley DB: An embedded database programmatic toolkit.">
-<meta name="keywords" content="embedded,database,programmatic,toolkit,b+tree,btree,hash,hashing,transaction,transactions,locking,logging,access method,access methods,java,C,C++">
-</head>
-<body bgcolor=white>
-<table><tr valign=top>
-<td><h3><dl><dt>Berkeley DB Reference Guide:<dd>Dumping and Reloading</dl></h3></td>
-<td width="1%"><a href="../../ref/dumpload/utility.html"><img src="../../images/prev.gif" alt="Prev"></a><a href="../../ref/toc.html"><img src="../../images/ref.gif" alt="Ref"></a><a href="../../ref/dumpload/text.html"><img src="../../images/next.gif" alt="Next"></a>
-</td></tr></table>
-<p>
-<h1 align=center>Dump output formats</h1>
-<p>There are two output formats used by <a href="../../utility/db_dump.html">db_dump</a> and <a href="../../utility/db_dump.html">db_dump185</a>.
-<p>In both output formats, the first few lines of the output contain header
-information describing the underlying access method, filesystem page size
-and other bookkeeping information.
-<p>The header information starts with a single line VERSION=N, where N is
-the version number of the dump output format.
-<p>The header information is then output in name=value pairs, where name may
-be any of the keywords listed in the <a href="../../utility/db_load.html">db_load</a> manual page, and
-value will be its value. While this header information can be manually
-edited before the database is reloaded, there is rarely any reason to do
-so, as all of this information can also be specified or overridden by
-command-line arguments to <a href="../../utility/db_load.html">db_load</a>.
-<p>The header information ends with single line HEADER=END.
-<p>Following the header information are the key/data pairs from the database.
-If the database being dumped is of type Btree or Hash, or if the
-<b>-k</b> option as been specified, the output will be paired lines of
-text, where the first line of the pair is the key item, and the second
-line of the pair is its corresponding data item. If the database being
-dumped is of type Queue or Recno and the <b>-k</b> has not been
-specified, the output will be lines of text, where each line is the next
-data item for the database. Each of these lines will be preceded by a
-single space.
-<p>If the <b>-p</b> option to <a href="../../utility/db_dump.html">db_dump</a> or <a href="../../utility/db_dump.html">db_dump185</a> was
-specified, the key/data lines will consist of single characters
-representing any characters from the database that are <i>printing
-characters</i> and backslash (<b>\</b>) escaped characters
-for any that were not. Backslash characters appearing in the output mean
-one of two things: if the backslash character precedes another backslash
-character, it means that a literal backslash character occurred in the
-key or data item. If the backslash character precedes any other
-character, the next two characters must be interpreted as hexadecimal
-specification of a single character, e.g., <b>\0a</b> is
-a newline character in the ASCII character set.
-<p>Although some care should be exercised, it is perfectly reasonable to use
-standard text editors and tools to edit databases dumped using the
-<b>-p</b> option before re-loading them using the <a href="../../utility/db_load.html">db_load</a>
-utility.
-<p>Note that the definition of a printing character may vary from system to
-system, and so database representations created using the <b>-p</b>
-option may be less portable than those created without it.
-<p>If the <b>-p</b> option to <a href="../../utility/db_dump.html">db_dump</a> or <a href="../../utility/db_dump.html">db_dump185</a> is
-not specified, each output line will consist of paired hexadecimal values,
-e.g., the line <b>726f6f74</b> is the string <b>root</b> in the ASCII
-character set.
-<p>In all output formats, the key and data items are ended by a single line
-DATA=END.
-<p>Where multiple databases have been dumped from a file, the overall output
-will repeat, i.e., a new set of headers and a new set of data items.
-<table><tr><td><br></td><td width="1%"><a href="../../ref/dumpload/utility.html"><img src="../../images/prev.gif" alt="Prev"></a><a href="../../ref/toc.html"><img src="../../images/ref.gif" alt="Ref"></a><a href="../../ref/dumpload/text.html"><img src="../../images/next.gif" alt="Next"></a>
-</td></tr></table>
-<p><font size=1><a href="http://www.sleepycat.com">Copyright Sleepycat Software</a></font>
-</body>
-</html>