1<!--$Id: align.so,v 1.4 2001/05/28 00:30:40 bostic Exp $--> 2<!--Copyright (c) 1997,2008 Oracle. All rights reserved.--> 3<!--See the file LICENSE for redistribution information.--> 4<html> 5<head> 6<title>Berkeley DB Reference Guide: Data alignment</title> 7<meta name="description" content="Berkeley DB: An embedded database programmatic toolkit."> 8<meta name="keywords" content="embedded,database,programmatic,toolkit,btree,hash,hashing,transaction,transactions,locking,logging,access method,access methods,Java,C,C++"> 9</head> 10<body bgcolor=white> 11<a name="2"><!--meow--></a> 12<table width="100%"><tr valign=top> 13<td><b><dl><dt>Berkeley DB Reference Guide:<dd>Access Methods</dl></b></td> 14<td align=right><a href="../am/curclose.html"><img src="../../images/prev.gif" alt="Prev"></a><a href="../toc.html"><img src="../../images/ref.gif" alt="Ref"></a><a href="../am_misc/get_bulk.html"><img src="../../images/next.gif" alt="Next"></a> 15</td></tr></table> 16<p align=center><b>Data alignment</b></p> 17<p>The Berkeley DB access methods provide no guarantees about byte alignment for 18returned key/data pairs, or callback functions which take <a href="../../api_c/dbt_class.html">DBT</a> 19references as arguments, and applications are responsible for arranging 20any necessary alignment. The <a href="../../api_c/dbt_class.html#DB_DBT_MALLOC">DB_DBT_MALLOC</a>, 21<a href="../../api_c/dbt_class.html#DB_DBT_REALLOC">DB_DBT_REALLOC</a> and <a href="../../api_c/dbt_class.html#DB_DBT_USERMEM">DB_DBT_USERMEM</a> flags may be used to 22store returned items in memory of arbitrary alignment.</p> 23<table width="100%"><tr><td><br></td><td align=right><a href="../am/curclose.html"><img src="../../images/prev.gif" alt="Prev"></a><a href="../toc.html"><img src="../../images/ref.gif" alt="Ref"></a><a href="../am_misc/get_bulk.html"><img src="../../images/next.gif" alt="Next"></a> 24</td></tr></table> 25<p><font size=1>Copyright (c) 1996,2008 Oracle. All rights reserved.</font> 26</body> 27</html> 28