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<p>Library Version 18.1.40</p>
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<b>Table of Contents</b>
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<p>
This document describes how to use transactions with your Berkeley DB
applications. It is intended to describe how to
transaction protect your application's data. The APIs used to perform this task
are described here, as are the environment infrastructure and administrative tasks
required by a transactional application. This book also
describes multi-threaded <span>and
multi-process</span> DB applications and the requirements they
have for deadlock detection.
</p>
<p>
This book describes Berkeley DB 18 Release 18.1, which provides library
version 18.1.40.
</p>
<p>
This book is aimed at the software engineer responsible for writing a
transactional DB application.
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<p>
This book assumes that you have already read and understood the
concepts contained in the
<span><em class="citetitle">Getting Started with Berkeley DB</em>
guide.</span>
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<h2 class="title" style="clear: both"><a id="conventions"></a>Conventions Used in this Book</h2>
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<p>
The following typographical conventions are used within in this manual:
</p>
<p>
Structure names are represented in <code class="classname">monospaced font</code>, as are <code class="methodname">method
names</code>. For example: "<code class="methodname">DB->open()</code> is a method
on a <code class="classname">DB</code> handle."
</p>
<p>
Variable or non-literal text is presented in <span class="emphasis"><em>italics</em></span>. For example: "Go to your
<span class="emphasis"><em>DB_INSTALL</em></span> directory."
</p>
<p>
Program examples are displayed in a <code class="classname">monospaced font</code> on a shaded background.
For example:
</p>
<pre class="programlisting">/* File: gettingstarted_common.h */
typedef struct stock_dbs {
DB *inventory_dbp; /* Database containing inventory information */
DB *vendor_dbp; /* Database containing vendor information */
char *db_home_dir; /* Directory containing the database files */
char *inventory_db_name; /* Name of the inventory database */
char *vendor_db_name; /* Name of the vendor database */
} STOCK_DBS; </pre>
<p>
In some situations, programming examples are updated from one chapter to the next. When
this occurs, the new code is presented in <strong class="userinput"><code>monospaced bold</code></strong> font. For example:
</p>
<pre class="programlisting">typedef struct stock_dbs {
DB *inventory_dbp; /* Database containing inventory information */
DB *vendor_dbp; /* Database containing vendor information */
<strong class="userinput"><code>DB *itemname_sdbp; /* Index based on the item name index */</code></strong>
char *db_home_dir; /* Directory containing the database files */
<strong class="userinput"><code>char *itemname_db_name; /* Itemname secondary database */</code></strong>
char *inventory_db_name; /* Name of the inventory database */
char *vendor_db_name; /* Name of the vendor database */
} STOCK_DBS; </pre>
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<h3 class="title">Note</h3>
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Finally, notes of special interest are represented using a note block such
as this.
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