store method explicitly for each changed persistent object. 
</DL></A>

<HR>
<A NAME = "Persistent.modify">
<B>modify()</B>
<DL><DD>
Mark object as modified. This object will be automatically stored to the database during transaction commit.
</DL></A>


<HR>
<A NAME = "Persistent.getStorage">
<B>getStorage()</B>
<DL><DD>
Get storage in which object is stored. 
<DL>
<DT><B>Returns</B>
<DD>Storage in which object is stored or <code>Null</code> if object is not persistent.
</DL></DL></A>

<HR>
<A NAME = "Persi