="class in com.sleepycat.db">CursorConfig</A>&nbsp;config)
                       throws <A HREF="../../../com/sleepycat/db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</A></PRE>
<DL>
<DD>Opens a cursor that returns the primary keys of entities qualifying for
 the join.  The join operation is performed as the returned cursor is
 accessed.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>txn</CODE> - the transaction used to protect all operations performed with
 the cursor, or null