ier)"><CODE>setForeignMultiKeyNullifier(com.sleepycat.db.ForeignMultiKeyNullifier)</CODE></A> instead.</p>

 <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, key creators must be thread safe.  In
 ge