1. Recovery algorithms have two parts: (i) Actions taken during normal transaction processing to ensure enough information exists to recover from failures, (ii) Actions taken after a failure to recover the database contents to a state that ensures atomicity, consistency and durability. a (a) Explain the above stated two parts with detail example in case of a airline reservation database. Also consider the payment gateway part (failure can be occurred during the online payment). (b) Also justify, why this two parts are necessary and sufficient to combat inconsistency in DBMS