link">DB_MULTIPLE_RECNO_WRITE_INIT</a> and <a href="../api_reference/C/DB_MULTIPLE_RECNO_WRITE_NEXT.html" class="olink">DB_MULTIPLE_RECNO_WRITE_NEXT</a> with a data size of zero.  In both cases, set the <a href="../api_reference/C/dbcget.html#dbcget_DB_MULTIPLE" class="olink">DB_MULTIPLE</a> flag to <a href="../api_reference/C/dbdel.html" class="olink">DB-&gt;del()</a>.  This is equivalent to calling <a href="../api_reference/C/dbdel.html" class="olink">DB-&gt;del()</a> for each key in the bulk buffer.  In 