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<title>Berkeley DB Reference Guide: Retrieving records</title>
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<td><h3><dl><dt>Berkeley DB Reference Guide:<dd>Access Methods</dl></h3></td>
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<h3 align=center>Retrieving records</h3>
<p>The <a href="../../api_c/db_get.html">DB->get</a> method retrieves records from the database. In general,
<a href="../../api_c/db_get.html">DB->get</a> takes a key and returns the associated data from the
database.</p>
<p>There are a few flags that you can set to customize retrieval:</p>
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<dt><a href="../../api_c/db_get.html#DB_GET_BOTH">DB_GET_BOTH</a><dd>Search for a matching key and data item, that is, only return success
if both the key and the data items match those stored in the database.
<dt><a href="../../api_c/dbc_get.html#DB_RMW">DB_RMW</a><dd>Read-modify-write: acquire write locks instead of read locks during
retrieval. This can enhance performance in threaded applications by
reducing the chance of deadlock.
<dt><a href="../../api_c/db_get.html#DB_SET_RECNO">DB_SET_RECNO</a><dd>If the underlying database is a Btree, and was configured so that it
is possible to search it by logical record number, retrieve a specific
record.
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<p>If the database has been configured to support duplicate records,
<a href="../../api_c/db_get.html">DB->get</a> will always return the first data item in the duplicate
set.</p>
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