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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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<p>
This document describes how to write replicated applications for
Berkeley DB 11<span class="emphasis"><em>g</em></span> Release 2 (library version 11.2.5.3). The APIs used to
implement replication in your application are described here. This
book describes the concepts surrounding replication, the scenarios
under which you might choose to use it, and the architectural
requirements that a replication application has over a
transactional application.
</p>
<p>
This book is aimed at the software engineer responsible for writing a
replicated DB application.
</p>
<p>
This book assumes that you have already read and understood the
concepts contained in the
<span><em class="citetitle">Berkeley DB Getting Started with Transaction Processing</em> guide.</span>
</p>
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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-&gt;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>
<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
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