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<! "@(#)get.so 10.3 (Sleepycat) 10/19/98">
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<title>Berkeley DB Reference Guide: Access Methods</title>
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<h3>Berkeley DB Reference Guide: Access Methods</h3>
<p>
<h1 align=center>Retrieving records</h1>
<p>
The <a href="../../api_c/Db/get.html">DB->get</a> function is the standard function for retrieving
records from the database. In general, the get function takes a key
and returns the associated data from the database.
<p>
There are a few flags that you can set to customize retrieval:
<dl compact>
<p><dt><a href="../../api_c/Db/get.html#DB_GET_BOTH">DB_GET_BOTH</a><dd>Search for a matching key and data item, i.e., only return if both
the key and the data items match those stored in the database.
<p><dt><a href="../../api_c/Dbc/get.html#DB_RMW">DB_RMW</a><dd>Acquire write locks instead of read locks during retrieval. This
can enhance performance in threaded applications where deadlock is
a concern.
<p><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.
</dl>
<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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