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https://github.com/yasuhirokimura/db18
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Yasuhiro KIMURA
864 lines
30 KiB
HTML
864 lines
30 KiB
HTML
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
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<title>Chapter 2. The DB Handle</title>
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<link rel="stylesheet" href="apiReference.css" type="text/css" />
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<meta name="generator" content="DocBook XSL Stylesheets V1.73.2" />
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<link rel="start" href="index.html" title="Berkeley DB C API Reference" />
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<link rel="up" href="index.html" title="Berkeley DB C API Reference" />
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<link rel="prev" href="introduction.html" title="Chapter 1. Introduction to Berkeley DB APIs" />
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<link rel="next" href="dbassociate.html" title="DB->associate()" />
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</head>
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<body>
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<div xmlns="" class="navheader">
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<div class="libver">
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<p>Library Version 18.1.32</p>
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</div>
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<table width="100%" summary="Navigation header">
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<tr>
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<th colspan="3" align="center">Chapter 2.
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The DB Handle
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</th>
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</tr>
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<tr>
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<td width="20%" align="left"><a accesskey="p" href="introduction.html">Prev</a> </td>
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<th width="60%" align="center"> </th>
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<td width="20%" align="right"> <a accesskey="n" href="dbassociate.html">Next</a></td>
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</tr>
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</table>
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<hr />
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</div>
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<div class="chapter" lang="en" xml:lang="en">
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<div class="titlepage">
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<div>
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<div>
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<h2 class="title"><a id="db"></a>Chapter 2.
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The DB Handle
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</h2>
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</div>
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</div>
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</div>
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<p>
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The DB is the handle for a single Berkeley DB database. A Berkeley DB database
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provides a mechanism for organizing key-data pairs of information. From the
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perspective of some database systems, a Berkeley DB database could be thought of as
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a single table within a larger database.
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</p>
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<p>
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You create a DB handle using the <a class="xref" href="dbcreate.html" title="db_create">
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<span>db_create</span>
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</a>
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<span>function.</span>
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For most database activities, you must then open the handle using the
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<a class="xref" href="dbopen.html" title="DB->open()">
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<span>DB->open()</span>
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</a>
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method. When you are done with them, handles must be closed using the
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<a class="xref" href="dbclose.html" title="DB->close()">
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<span>DB->close()</span>
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</a> method.
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</p>
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<p>
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Alternatively, you can create a DB and then rename, remove or verify the database
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without performing an open. See <a class="xref" href="dbrename.html" title="DB->rename()">
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<span>DB->rename()</span>
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</a>,
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<a class="xref" href="dbremove.html" title="DB->remove()">
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<span>DB->remove()</span>
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</a> or
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<a class="xref" href="dbverify.html" title="DB->verify()">
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<span>DB->verify()</span>
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</a> for information on these
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activities.
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</p>
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<p>
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It is possible to create databases such that they are organized within a
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<span class="emphasis"><em>database environment</em></span>. Environments are optional for simple Berkeley
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DB applications that do not use transactions, recovery, replication or any other
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advanced features. For simple Berkeley DB applications, environments still offer some
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advantages. For example, they provide some organizational
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benefits on-disk (all databases are located on disk relative to the environment). Also,
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if you are using multiple databases, then environments allow your databases to share a
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common in-memory cache, which makes for more efficient usage of your hardware's
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resources.
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</p>
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<p>
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See <a class="link" href="env.html" title="Chapter 5. The DB_ENV Handle">DB_ENV</a> for information on using database
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environments.
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</p>
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<p>
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You specify the underlying organization of the data in the database (e.g. BTree, Hash,
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Queue, and Recno) when you open the database. When you create a database,
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you are free to specify any of the available database types. On subsequent opens,
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you must either specify the access method used when you first opened the database, or
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you can specify <code class="literal">DB_UNKNOWN</code> in order to have this information
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retrieved for you. See the <a class="xref" href="dbopen.html" title="DB->open()">
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<span>DB->open()</span>
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</a>
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method for information on specifying database types.
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</p>
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<div class="sect1" lang="en" xml:lang="en">
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<div class="titlepage">
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<div>
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<div>
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<h2 class="title" style="clear: both"><a id="dblist"></a>Database and Related Methods</h2>
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</div>
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</div>
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</div>
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<div class="navtable">
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<table border="1" width="80%">
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<thead>
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<tr>
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<th>Database Operations</th>
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<th>Description</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td>
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<a class="xref" href="dbassociate.html" title="DB->associate()">
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<span>DB->associate()</span>
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</a>
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</td>
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<td>Associate a secondary index</td>
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</tr>
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<tr>
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<td>
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<a class="xref" href="dbassociate_foreign.html" title="DB->associate_foreign()">
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<span>DB->associate_foreign()</span>
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</a>
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</td>
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<td>Associate a foreign index</td>
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</tr>
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<tr>
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<td>
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<a class="xref" href="dbclose.html" title="DB->close()">
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<span>DB->close()</span>
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</a>
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</td>
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<td>Close a database</td>
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</tr>
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<tr>
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<td>
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<a class="xref" href="dbcompact.html" title="DB->compact()">
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<span>DB->compact()</span>
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</a>
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</td>
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<td>Compact a database</td>
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</tr>
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<tr>
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<td>
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<a class="xref" href="dbconvert.html" title="DB->convert()">
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<span>DB->convert()</span>
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</a>
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</td>
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<td>Convert a database</td>
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</tr>
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<tr>
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<td>
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<a class="xref" href="dbcreate.html" title="db_create">
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<span>db_create</span>
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</a>
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</td>
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<td>Create a database handle</td>
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</tr>
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<tr>
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<td>
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<a class="xref" href="dbdel.html" title="DB->del()">
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<span>DB->del()</span>
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</a>
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</td>
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<td>Delete items from a database</td>
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</tr>
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<tr>
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<td>
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<a class="xref" href="dberr.html" title="DB->err()">
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<span>DB->err()</span>
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</a>
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</td>
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<td>Error message</td>
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</tr>
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<tr>
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<td>
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<a class="xref" href="dbexists.html" title="DB->exists()">
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<span>DB->exists()</span>
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</a>
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</td>
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<td>Return if an item appears in a database</td>
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</tr>
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<tr>
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<td>
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<a class="xref" href="dbfd.html" title="DB->fd()">
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<span>DB->fd()</span>
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</a>
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</td>
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<td>Return a file descriptor from a database</td>
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</tr>
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<tr>
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<td>
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<a class="xref" href="dbget.html" title="DB->get()">
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<span>DB->get()</span>
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</a>
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</td>
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<td>Get items from a database</td>
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</tr>
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<tr>
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<td>
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<a class="xref" href="dbget_byteswapped.html" title="DB->get_byteswapped()">
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<span>DB->get_byteswapped()</span>
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</a>
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</td>
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<td>Return if the underlying database is in host order</td>
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</tr>
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<tr>
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<td>
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<a class="xref" href="dbget_dbname.html" title="DB->get_dbname()">
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<span>DB->get_dbname()</span>
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</a>
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</td>
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<td>Return the file and database name</td>
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</tr>
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<tr>
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<td>
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<a class="xref" href="dbget_multiple.html" title="DB->get_multiple()">
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<span>DB->get_multiple()</span>
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</a>
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</td>
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<td>Return if the database handle references multiple databases</td>
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</tr>
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<tr>
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<td>
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<a class="xref" href="dbget_open_flags.html" title="DB->get_open_flags()">
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<span>DB->get_open_flags()</span>
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</a>
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</td>
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<td>Returns the flags specified to DB->open</td>
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</tr>
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<tr>
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<td>
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<a class="xref" href="dbget_slices.html" title="DB->get_slices()">
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<span>DB->get_slices()</span>
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</a>
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</td>
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<td>Returns an array of slice databases.</td>
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</tr>
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<tr>
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<td>
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<a class="xref" href="dbget_type.html" title="DB->get_type()">
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<span>DB->get_type()</span>
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</a>
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</td>
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<td>Return the database type</td>
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</tr>
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<tr>
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<td>
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<a class="xref" href="dbjoin.html" title="DB->join()">
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<span>DB->join()</span>
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</a>
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</td>
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<td>Perform a database join on cursors</td>
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</tr>
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<tr>
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<td>
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<a class="xref" href="dbkey_range.html" title="DB->key_range()">
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<span>DB->key_range()</span>
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</a>
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</td>
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<td>Return estimate of key location</td>
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</tr>
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<tr>
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<td>
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<a class="xref" href="dbmsg.html" title="DB->msg()">
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<span>DB->msg()</span>
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</a>
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</td>
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<td>Informational message</td>
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</tr>
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<tr>
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<td>
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<a class="xref" href="dbopen.html" title="DB->open()">
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<span>DB->open()</span>
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</a>
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</td>
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<td>Open a database</td>
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</tr>
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<tr>
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<td>
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<a class="xref" href="dbput.html" title="DB->put()">
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<span>DB->put()</span>
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</a>
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</td>
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<td>Store items into a database</td>
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</tr>
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<tr>
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<td>
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<a class="xref" href="dbremove.html" title="DB->remove()">
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<span>DB->remove()</span>
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</a>
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</td>
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<td>Remove a database</td>
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</tr>
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<tr>
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<td>
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<a class="xref" href="dbrename.html" title="DB->rename()">
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<span>DB->rename()</span>
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</a>
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</td>
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<td>Rename a database</td>
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</tr>
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<tr>
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<td><a class="xref" href="dbset_priority.html" title="DB->set_priority()">
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<span>DB->set_priority()</span>
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</a>, <a class="xref" href="dbget_priority.html" title="DB->get_priority()">
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<span>DB->get_priority()</span>
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</a></td>
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<td>Set/get cache page priority</td>
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</tr>
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<tr>
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<td>
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<a class="xref" href="dbslice_lookup.html" title="DB->slice_lookup()">
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<span>DB->slice_lookup()</span>
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</a>
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</td>
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<td>Return the slice database that contains the key</td>
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</tr>
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<tr>
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<td>
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<a class="xref" href="dbstat.html" title="DB->stat()">
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<span>DB->stat()</span>
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</a>
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</td>
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<td>Database statistics</td>
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</tr>
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<tr>
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<td>
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<a class="xref" href="dbstat_print.html" title="DB->stat_print()">
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<span>DB->stat_print()</span>
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</a>
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</td>
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<td>Display database statistics</td>
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</tr>
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<tr>
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<td>
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<a class="xref" href="dbsync.html" title="DB->sync()">
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<span>DB->sync()</span>
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</a>
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</td>
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<td>Flush a database to stable storage</td>
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</tr>
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<tr>
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<td>
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<a class="xref" href="dbtruncate.html" title="DB->truncate()">
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<span>DB->truncate()</span>
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</a>
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</td>
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<td>Empty a database</td>
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</tr>
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<tr>
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<td>
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<a class="xref" href="dbupgrade.html" title="DB->upgrade()">
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<span>DB->upgrade()</span>
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</a>
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</td>
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<td>Upgrade a database</td>
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</tr>
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<tr>
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<td>
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<a class="xref" href="dbverify.html" title="DB->verify()">
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<span>DB->verify()</span>
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</a>
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</td>
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<td>Verify/salvage a database</td>
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</tr>
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<tr>
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<td>
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<a class="xref" href="dbcursor.html" title="DB->cursor()">
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<span>DB->cursor()</span>
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</a>
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</td>
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<td>Create a cursor handle</td>
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</tr>
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<tr>
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<td colspan="2">
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<span class="bold">
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<strong>Database Configuration</strong>
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</span>
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</td>
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</tr>
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<tr>
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<td>
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<a class="xref" href="dbget_partition_callback.html" title="DB->get_partition_callback()">
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<span>DB->get_partition_callback()</span>
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</a>
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</td>
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<td>Return the database partition callback</td>
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||
</tr>
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<tr>
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<td>
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<a class="xref" href="dbget_partition_keys.html" title="DB->get_partition_keys()">
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<span>DB->get_partition_keys()</span>
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</a>
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</td>
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<td>Returns the array of keys used for the database partition</td>
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</tr>
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<tr>
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<td>
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<a class="xref" href="dbset_alloc.html" title="DB->set_alloc()">
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<span>DB->set_alloc()</span>
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||
</a>
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||
</td>
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<td>Set local space allocation functions</td>
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</tr>
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<tr>
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<td><a class="xref" href="dbset_cachesize.html" title="DB->set_cachesize()">
|
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<span>DB->set_cachesize()</span>
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||
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</a>, <a class="xref" href="dbget_cachesize.html" title="DB->get_cachesize()">
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<span>DB->get_cachesize()</span>
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||
</a></td>
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<td>Set/get the database cache size</td>
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||
</tr>
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||
<tr>
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<td><a class="xref" href="dbset_create_dir.html" title="DB->set_create_dir()">
|
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<span>DB->set_create_dir()</span>
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</a>, <a class="xref" href="dbget_create_dir.html" title="DB->get_create_dir()">
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<span>DB->get_create_dir()</span>
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||
|
||
</a></td>
|
||
<td>Set/get the directory in which a database is placed</td>
|
||
</tr>
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||
<tr>
|
||
<td>
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||
<a class="xref" href="dbset_dup_compare.html" title="DB->set_dup_compare()">
|
||
<span>DB->set_dup_compare()</span>
|
||
|
||
</a>
|
||
</td>
|
||
<td>Set a duplicate comparison function</td>
|
||
</tr>
|
||
<tr>
|
||
<td><a class="xref" href="dbset_encrypt.html" title="DB->set_encrypt()">
|
||
<span>DB->set_encrypt()</span>
|
||
|
||
</a>, <a class="xref" href="dbget_encrypt_flags.html" title="DB->get_encrypt_flags()">
|
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<span>DB->get_encrypt_flags()</span>
|
||
|
||
</a></td>
|
||
<td>Set/get the database cryptographic key</td>
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||
</tr>
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<tr>
|
||
<td>
|
||
<a class="xref" href="dbset_errcall.html" title="DB->set_errcall()">
|
||
<span>DB->set_errcall()</span>
|
||
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||
</a>
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||
</td>
|
||
<td>Set error message callback</td>
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||
</tr>
|
||
<tr>
|
||
<td><a class="xref" href="dbset_errfile.html" title="DB->set_errfile()">
|
||
<span>DB->set_errfile()</span>
|
||
|
||
</a>, <a class="xref" href="dbget_errfile.html" title="DB->get_errfile()">
|
||
<span>DB->get_errfile()</span>
|
||
|
||
</a></td>
|
||
<td>Set/get error message FILE</td>
|
||
</tr>
|
||
<tr>
|
||
<td><a class="xref" href="dbset_errpfx.html" title="DB->set_errpfx()">
|
||
<span>DB->set_errpfx()</span>
|
||
|
||
</a>, <a class="xref" href="dbget_errpfx.html" title="DB->get_errpfx()">
|
||
<span>DB->get_errpfx()</span>
|
||
|
||
</a></td>
|
||
<td>Set/get error message prefix</td>
|
||
</tr>
|
||
<tr>
|
||
<td>
|
||
<a class="xref" href="dbset_feedback.html" title="DB->set_feedback()">
|
||
<span>DB->set_feedback()</span>
|
||
|
||
</a>
|
||
</td>
|
||
<td>Set feedback callback</td>
|
||
</tr>
|
||
<tr>
|
||
<td><a class="xref" href="dbset_flags.html" title="DB->set_flags()">
|
||
<span>DB->set_flags()</span>
|
||
|
||
</a>, <a class="xref" href="dbget_flags.html" title="DB->get_flags()">
|
||
<span>DB->get_flags()</span>
|
||
|
||
</a></td>
|
||
<td>Set/get general database configuration</td>
|
||
</tr>
|
||
<tr>
|
||
<td><a class="xref" href="dbset_lk_exclusive.html" title="DB->set_lk_exclusive()">
|
||
<span>DB->set_lk_exclusive()</span>
|
||
|
||
</a>, <a class="xref" href="dbget_lk_exclusive.html" title="DB->get_lk_exclusive()">
|
||
<span>DB->get_lk_exclusive()</span>
|
||
|
||
</a></td>
|
||
<td>Set/get exclusive database locking</td>
|
||
</tr>
|
||
<tr>
|
||
<td><a class="xref" href="dbset_lorder.html" title="DB->set_lorder()">
|
||
<span>DB->set_lorder()</span>
|
||
|
||
</a>, <a class="xref" href="dbget_lorder.html" title="DB->get_lorder()">
|
||
<span>DB->get_lorder()</span>
|
||
|
||
</a></td>
|
||
<td>Set/get the database byte order</td>
|
||
</tr>
|
||
<tr>
|
||
<td>
|
||
<a class="xref" href="dbset_msgcall.html" title="DB->set_msgcall()">
|
||
<span>DB->set_msgcall()</span>
|
||
|
||
</a>
|
||
</td>
|
||
<td>Set informational message callback</td>
|
||
</tr>
|
||
<tr>
|
||
<td><a class="xref" href="dbset_msgfile.html" title="DB->set_msgfile()">
|
||
<span>DB->set_msgfile()</span>
|
||
|
||
</a>, <a class="xref" href="dbget_msgfile.html" title="DB->get_msgfile()">
|
||
<span>DB->get_msgfile()</span>
|
||
|
||
</a></td>
|
||
<td>Set/get informational message FILE</td>
|
||
</tr>
|
||
<tr>
|
||
<td><a class="xref" href="dbset_msgpfx.html" title="DB->set_msgpfx()">
|
||
<span>DB->set_msgpfx()</span>
|
||
|
||
</a>, <a class="xref" href="dbget_msgpfx.html" title="DB->get_msgpfx()">
|
||
<span>DB->get_msgpfx()</span>
|
||
|
||
</a></td>
|
||
<td>Set/get informational message prefix</td>
|
||
</tr>
|
||
<tr>
|
||
<td><a class="xref" href="dbset_pagesize.html" title="DB->set_pagesize()">
|
||
<span>DB->set_pagesize()</span>
|
||
|
||
</a>, <a class="xref" href="dbget_pagesize.html" title="DB->get_pagesize()">
|
||
<span>DB->get_pagesize()</span>
|
||
|
||
</a></td>
|
||
<td>Set/get the underlying database page size</td>
|
||
</tr>
|
||
<tr>
|
||
<td>
|
||
<a class="xref" href="dbset_partition.html" title="DB->set_partition()">
|
||
<span>DB->set_partition()</span>
|
||
|
||
</a>
|
||
</td>
|
||
<td>Set database partitioning</td>
|
||
</tr>
|
||
<tr>
|
||
<td><a class="xref" href="dbset_partition_dirs.html" title="DB->set_partition_dirs()">
|
||
<span>DB->set_partition_dirs()</span>
|
||
|
||
</a>, <a class="xref" href="dbget_partition_dirs.html" title="DB->get_partition_dirs()">
|
||
<span>DB->get_partition_dirs()</span>
|
||
|
||
</a></td>
|
||
<td>Set/get the directories used for database partitions</td>
|
||
</tr>
|
||
<tr>
|
||
<td>
|
||
<a class="xref" href="dbset_slice_callback.html" title="DB->set_slice_callback()">
|
||
<span>DB->set_slice_callback()</span>
|
||
|
||
</a>
|
||
</td>
|
||
<td>Set the callback used to identify slices</td>
|
||
</tr>
|
||
<tr>
|
||
<td colspan="2">
|
||
<span class="bold">
|
||
<strong>Btree/Recno Configuration</strong>
|
||
</span>
|
||
</td>
|
||
</tr>
|
||
<tr>
|
||
<td>
|
||
<a class="xref" href="dbset_append_recno.html" title="DB->set_append_recno()">
|
||
<span>DB->set_append_recno()</span>
|
||
|
||
</a>
|
||
</td>
|
||
<td>Set record append callback</td>
|
||
</tr>
|
||
<tr>
|
||
<td>
|
||
<a class="xref" href="dbset_bt_compare.html" title="DB->set_bt_compare()">
|
||
<span>DB->set_bt_compare()</span>
|
||
|
||
</a>
|
||
</td>
|
||
<td>Set a Btree comparison function</td>
|
||
</tr>
|
||
<tr>
|
||
<td>
|
||
<a class="xref" href="dbset_bt_compress.html" title="DB->set_bt_compress()">
|
||
<span>DB->set_bt_compress()</span>
|
||
|
||
</a>
|
||
</td>
|
||
<td>Set Btree compression functions</td>
|
||
</tr>
|
||
<tr>
|
||
<td><a class="xref" href="dbset_bt_minkey.html" title="DB->set_bt_minkey()">
|
||
<span>DB->set_bt_minkey()</span>
|
||
|
||
</a>, <a class="xref" href="dbget_bt_minkey.html" title="DB->get_bt_minkey()">
|
||
<span>DB->get_bt_minkey()</span>
|
||
|
||
</a></td>
|
||
<td>Set/get the minimum number of keys per Btree page</td>
|
||
</tr>
|
||
<tr>
|
||
<td>
|
||
<a class="xref" href="dbset_bt_prefix.html" title="DB->set_bt_prefix()">
|
||
<span>DB->set_bt_prefix()</span>
|
||
|
||
</a>
|
||
</td>
|
||
<td>Set a Btree prefix comparison function</td>
|
||
</tr>
|
||
<tr>
|
||
<td><a class="xref" href="dbset_re_delim.html" title="DB->set_re_delim()">
|
||
<span>DB->set_re_delim()</span>
|
||
|
||
</a>, <a class="xref" href="dbget_re_delim.html" title="DB->get_re_delim()">
|
||
<span>DB->get_re_delim()</span>
|
||
|
||
</a></td>
|
||
<td>Set/get the variable-length record delimiter</td>
|
||
</tr>
|
||
<tr>
|
||
<td><a class="xref" href="dbset_re_len.html" title="DB->set_re_len()">
|
||
<span>DB->set_re_len()</span>
|
||
|
||
</a>, <a class="xref" href="dbget_re_len.html" title="DB->get_re_len()">
|
||
<span>DB->get_re_len()</span>
|
||
|
||
</a></td>
|
||
<td>Set/get the fixed-length record length</td>
|
||
</tr>
|
||
<tr>
|
||
<td><a class="xref" href="dbset_re_pad.html" title="DB->set_re_pad()">
|
||
<span>DB->set_re_pad()</span>
|
||
|
||
</a>, <a class="xref" href="dbget_re_pad.html" title="DB->get_re_pad()">
|
||
<span>DB->get_re_pad()</span>
|
||
|
||
</a></td>
|
||
<td>Set/get the fixed-length record pad byte</td>
|
||
</tr>
|
||
<tr>
|
||
<td><a class="xref" href="dbset_re_source.html" title="DB->set_re_source()">
|
||
<span>DB->set_re_source()</span>
|
||
|
||
</a>, <a class="xref" href="dbget_re_source.html" title="DB->get_re_source()">
|
||
<span>DB->get_re_source()</span>
|
||
|
||
</a></td>
|
||
<td>Set/get the backing Recno text file</td>
|
||
</tr>
|
||
<tr>
|
||
<td colspan="2">
|
||
<span class="bold">
|
||
<strong>Hash Configuration</strong>
|
||
</span>
|
||
</td>
|
||
</tr>
|
||
<tr>
|
||
<td>
|
||
<a class="xref" href="dbset_h_compare.html" title="DB->set_h_compare()">
|
||
<span>DB->set_h_compare()</span>
|
||
|
||
</a>
|
||
</td>
|
||
<td>Set a Hash comparison function</td>
|
||
</tr>
|
||
<tr>
|
||
<td><a class="xref" href="dbset_h_ffactor.html" title="DB->set_h_ffactor()">
|
||
<span>DB->set_h_ffactor()</span>
|
||
|
||
</a>, <a class="xref" href="dbget_h_ffactor.html" title="DB->get_h_ffactor()">
|
||
<span>DB->get_h_ffactor()</span>
|
||
|
||
</a></td>
|
||
<td>Set/get the Hash table density</td>
|
||
</tr>
|
||
<tr>
|
||
<td>
|
||
<a class="xref" href="dbset_h_hash.html" title="DB->set_h_hash()">
|
||
<span>DB->set_h_hash()</span>
|
||
|
||
</a>
|
||
</td>
|
||
<td>Set a hashing function</td>
|
||
</tr>
|
||
<tr>
|
||
<td><a class="xref" href="dbset_h_nelem.html" title="DB->set_h_nelem()">
|
||
<span>DB->set_h_nelem()</span>
|
||
|
||
</a>, <a class="xref" href="dbget_h_nelem.html" title="DB->get_h_nelem()">
|
||
<span>DB->get_h_nelem()</span>
|
||
|
||
</a></td>
|
||
<td>Set/get the Hash table size</td>
|
||
</tr>
|
||
<tr>
|
||
<td colspan="2">
|
||
<span class="bold">
|
||
<strong>Queue Configuration</strong>
|
||
</span>
|
||
</td>
|
||
</tr>
|
||
<tr>
|
||
<td><a class="xref" href="dbset_q_extentsize.html" title="DB->set_q_extentsize()">
|
||
<span>DB->set_q_extentsize()</span>
|
||
|
||
</a>, <a class="xref" href="dbget_q_extentsize.html" title="DB->get_q_extentsize()">
|
||
<span>DB->get_q_extentsize()</span>
|
||
|
||
</a></td>
|
||
<td>Set/get Queue database extent size</td>
|
||
</tr>
|
||
<tr>
|
||
<td colspan="2">
|
||
<span class="bold">
|
||
<strong>Heap</strong>
|
||
</span>
|
||
</td>
|
||
</tr>
|
||
<tr>
|
||
<td><a class="xref" href="dbset_heapsize.html" title="DB->set_heapsize()">
|
||
<span>DB->set_heapsize()</span>
|
||
|
||
</a>, <a class="xref" href="dbget_heapsize.html" title="DB->get_heapsize()">
|
||
<span>DB->get_heapsize()</span>
|
||
|
||
</a></td>
|
||
<td>Set/get the database heap size</td>
|
||
</tr>
|
||
<tr>
|
||
<td><a class="xref" href="dbset_heap_regionsize.html" title="DB->set_heap_regionsize()">
|
||
<span>DB->set_heap_regionsize()</span>
|
||
|
||
</a>, <a class="xref" href="dbget_heap_regionsize.html" title="DB->get_heap_regionsize()">
|
||
<span>DB->get_heap_regionsize()</span>
|
||
|
||
</a></td>
|
||
<td>Set/get the database region size</td>
|
||
</tr>
|
||
<tr>
|
||
<td>
|
||
<a class="xref" href="db_heap_rid.html" title="DB_HEAP_RID">
|
||
<span>DB_HEAP_RID</span>
|
||
|
||
</a>
|
||
</td>
|
||
<td></td>
|
||
</tr>
|
||
<tr>
|
||
<td colspan="2">
|
||
<span class="bold">
|
||
<strong>Database Utilities</strong>
|
||
</span>
|
||
</td>
|
||
</tr>
|
||
<tr>
|
||
<td>
|
||
<a class="xref" href="db_copy.html" title="db_copy">db_copy</a>
|
||
</td>
|
||
<td>Copy a named database to a target directory</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
<div class="navfooter">
|
||
<hr />
|
||
<table width="100%" summary="Navigation footer">
|
||
<tr>
|
||
<td width="40%" align="left"><a accesskey="p" href="introduction.html">Prev</a> </td>
|
||
<td width="20%" align="center"> </td>
|
||
<td width="40%" align="right"> <a accesskey="n" href="dbassociate.html">Next</a></td>
|
||
</tr>
|
||
<tr>
|
||
<td width="40%" align="left" valign="top">Chapter 1. Introduction to Berkeley DB APIs </td>
|
||
<td width="20%" align="center">
|
||
<a accesskey="h" href="index.html">Home</a>
|
||
</td>
|
||
<td width="40%" align="right" valign="top">
|
||
<span>DB->associate()</span>
|
||
|
||
</td>
|
||
</tr>
|
||
</table>
|
||
</div>
|
||
</body>
|
||
</html>
|