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<h1 id="db2-backend-reference">DB2 Backend Reference</h1>
<p>SOCI backend for accessing IBM DB2 database.</p>
<h2 id="prerequisites">Prerequisites</h2>
<h3 id="supported-versions">Supported Versions</h3>
<p>See <a href="#tested-platforms">Tested Platforms</a>.</p>
<h3 id="tested-platforms">Tested Platforms</h3>
<table>
<thead>
<tr>
<th>DB2</th>
<th>OS</th>
<th>Compiler</th>
</tr>
</thead>
<tbody>
<tr>
<td>-</td>
<td>Linux PPC64</td>
<td>GCC</td>
</tr>
<tr>
<td>9.1</td>
<td>Linux</td>
<td>GCC</td>
</tr>
<tr>
<td>9.5</td>
<td>Linux</td>
<td>GCC</td>
</tr>
<tr>
<td>9.7</td>
<td>Linux</td>
<td>GCC</td>
</tr>
<tr>
<td>10.1</td>
<td>Linux</td>
<td>GCC</td>
</tr>
<tr>
<td>10.1</td>
<td>Windows 8</td>
<td>Visual Studio 2012</td>
</tr>
<tr>
<td>10.5.0.5</td>
<td>macOS High Sierra 10.13.5</td>
<td>AppleClang 9.1.0.9020039</td>
</tr>
</tbody>
</table>
<h3 id="required-client-libraries">Required Client Libraries</h3>
<p>The SOCI DB2 backend requires client library from the <a href="https://www-01.ibm.com/support/docview.wss?uid=swg21385217">IBM Data Server Driver Package (DS Driver)</a>.</p>
<h2 id="connecting-to-the-database">Connecting to the Database</h2>
<p>On Unix, before using the DB2 backend please make sure, that you have sourced DB2 profile into your environment:</p>
<pre><code class="language-console">. ~/db2inst1/sqllib/db2profile
</code></pre>
<p>To establish a connection to the DB2 database, create a session object using the DB2
backend factory together with the database file name:</p>
<pre><code class="language-cpp">soci::session sql(soci::db2, "your DB2 connection string here");
</code></pre>
<h2 id="soci-feature-support">SOCI Feature Support</h2>
<h3 id="dynamic-binding">Dynamic Binding</h3>
<p>TODO</p>
<h3 id="bulk-operations">Bulk Operations</h3>
<p>Supported, but with caution as it hasn't been extensively tested.</p>
<h3 id="transactions">Transactions</h3>
<p>Currently, not supported.</p>
<h3 id="blob-data-type">BLOB Data Type</h3>
<p>Currently, not supported.</p>
<h3 id="nested-statements">Nested Statements</h3>
<p>Nesting statements are not processed by SOCI in any special way and they work as implemented
by the DB2 database.</p>
<h3 id="stored-procedures">Stored Procedures</h3>
<p>Stored procedures are supported, with <code>CALL</code> statement.</p>
<h2 id="native-api-access">Native API Access</h2>
<p>TODO</p>
<h2 id="backend-specific-extensions">Backend-specific extensions</h2>
<p>None.</p>
<h2 id="configuration-options">Configuration options</h2>
<p>This backend supports <code>db2_option_driver_complete</code> option which can be passed to it via
<code>connection_parameters</code> class. The value of this option is passed to <code>SQLDriverConnect()</code>
function as "driver completion" parameter and so must be one of <code>SQL_DRIVER_XXX</code> values,
in the string form. The default value of this option is <code>SQL_DRIVER_PROMPT</code> meaning
that the driver will query the user for the user name and/or the password if they are
not stored together with the connection. If this is undesirable for some reason,
you can use <code>SQL_DRIVER_NOPROMPT</code> value for this option to suppress showing the message box:</p>
<pre><code class="language-cpp">connection_parameters parameters("db2", "DSN=sample");
parameters.set_option(db2_option_driver_complete, "0" /* SQL_DRIVER_NOPROMPT */);
session sql(parameters);
</code></pre>
<p>Note, <code>db2_option_driver_complete</code> controls driver completion specific to the IBM DB2 driver
for ODBC and CLI.</p></div>
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