try {
        dbAccessSetUp();
        ResultSet rs = stmt.executeQuery("SELECT count(*) as total FROM taddress WHERE address_id = (SELECT address_id FROM tlink WHERE ext_id =" + this.ID + ")");

        if(!rs.next()) {
            fail("Record does not exist in taddress");
        }
        int count = 0;
        while(rs.next()) {
            count = rs.getInt(1);
            System.out.println("number of count : " + count);
            assertTrue(0 < count);
        }
        rs.close();
    } catch(SQLException se) {
        se.printStackTrace();
        assertEquals(true, false);
    } catch(Exception e) {
        e.printStackTrace();
        assertEquals(true, false);
    } finally {
        try {
            if(stmt!=null) stmt.close();
        } catch(SQLException se2) {
            assertEquals(true, false);
        }
        try {
            if(conn!=null) conn.close();
        } catch(SQLException se) {
            se.printStackTrace();
            assertEquals(true, false);
        }
    }