nMultiKeyNullifier</A>&nbsp;multiKeyNullifier)</PRE>
<DL>
<DD>Specifies the user-supplied object used for setting multi-valued foreign
 keys to null.

 <p>If the foreign key database property is non-null and the foreign key
 delete action is <code>NULLIFY</code>, this property is required to be
 non-null; otherwise, this property is ignored.</p>

 <p><em>WARNING:</em> Key nullifier instances are shared by multiple
 threads and key nullifier methods are called without any special
 synchronization.  Therefore