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<!--$Id: version.so,v 10.14 2000/03/18 21:43:16 bostic Exp $-->
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<!--Copyright 1997, 1998, 1999, 2000 by Sleepycat Software, Inc.-->
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<!--All rights reserved.-->
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<html>
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<head>
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<title>Berkeley DB Reference Guide: Library version information</title>
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<meta name="description" content="Berkeley DB: An embedded database programmatic toolkit.">
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<meta name="keywords" content="embedded,database,programmatic,toolkit,b+tree,btree,hash,hashing,transaction,transactions,locking,logging,access method,access methods,java,C,C++">
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<body bgcolor=white>
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<table><tr valign=top>
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<td><h3><dl><dt>Berkeley DB Reference Guide:<dd>Programmer Notes</dl></h3></td>
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<td width="1%"><a href="../../ref/program/copy.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/program/dbsizes.html"><img src="../../images/next.gif" alt="Next"></a>
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</td></tr></table>
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<p>
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<h1 align=center>Library version information</h1>
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<p>Each release of the Berkeley DB library has a major version number, a minor
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version number, and a patch number.
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<p>The major version number changes only when major portions of the Berkeley DB
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functionality have been changed. In this case, it may be necessary to
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significantly modify applications in order to upgrade them to use the new
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version of the library.
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<p>The minor version number changes when Berkeley DB interfaces have changed, and
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the new release is not entirely backward compatible with previous releases.
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To upgrade applications to the new version, they must be recompiled, and
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potentially, minor modifications made, (e.g., the order of arguments to a
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function might have changed).
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<p>The patch number changes on each release. If only the patch number
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has changed in a release, applications do not need to be recompiled,
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and they can be upgraded to the new version by simply installing a
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new version of the shared library.
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<p>Internal Berkeley DB interfaces may change at any time and during any release,
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without warning. This means that the library must be entirely recompiled
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and reinstalled when upgrading to new releases of the library, as there
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is no guarantee that modules from the current version of the library will
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interact correctly with modules from a previous release.
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<p>To retrieve the Berkeley DB version information, applications should use the
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<a href="../../api_c/env_version.html">db_version</a> interface. In addition to the above information, the
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<a href="../../api_c/env_version.html">db_version</a> interface returns a string encapsulating the version
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information, suitable for display to a user.
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<table><tr><td><br></td><td width="1%"><a href="../../ref/program/copy.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/program/dbsizes.html"><img src="../../images/next.gif" alt="Next"></a>
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</td></tr></table>
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<p><font size=1><a href="http://www.sleepycat.com">Copyright Sleepycat Software</a></font>
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