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<h2 class="title"><a id="preface"></a>Preface</h2>
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<b>Table of Contents</b>
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<span class="sect1">
<a href="preface.html#conventions">Conventions Used in this Book</a>
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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 11<span class="emphasis"><em>g</em></span> Release 2, which provides library
version 11.2.5.1.
</p>
<p>
This book is aimed at the software engineer responsible for writing a
transactional DB application.
</p>
<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>
Class names are represented in <code class="classname">monospaced font</code>, as are <code class="methodname">method
names</code>. For example:
<span>"<code class="methodname">DbEnv::open()</code> is a
<code class="classname">DbEnv</code> class method."</span>
</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">typedef struct vendor {
char name[MAXFIELD]; // Vendor name
char street[MAXFIELD]; // Street name and number
char city[MAXFIELD]; // City
char state[3]; // Two-digit US state code
char zipcode[6]; // US zipcode
char phone_number[13]; // Vendor phone number
} VENDOR; </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 vendor {
char name[MAXFIELD]; // Vendor name
char street[MAXFIELD]; // Street name and number
char city[MAXFIELD]; // City
char state[3]; // Two-digit US state code
char zipcode[6]; // US zipcode
char phone_number[13]; // Vendor phone number
<strong class="userinput"><code>char sales_rep[MAXFIELD]; // Name of sales representative
char sales_rep_phone[MAXFIELD]; // Sales rep's phone number </code></strong>
} VENDOR; </pre>
<div class="note" style="margin-left: 0.5in; margin-right: 0.5in;">
<h3 class="title">Note</h3>
<p>
Finally, notes of special interest are represented using a note block such
as this.
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