R12 upgradation support

Can some suggest which table and column to replace with below 11i .  Some blogs says, use gl_daily_rates but in that, i am not finding Period_name & Actual_flag.  Please suggest.

  SELECT ROUND(avg_rate,2)

      INTO exch_rate

FROM gl_translation_rates_v  

WHERE set_of_books_id = sob_id

AND   functional_currency = from_curr

AND   to_currency_code = to_curr

AND   actual_flag = balance_type

AND   period_name = period;

Thank you.