Q: If the two-phase locking protocol was applied, and Transaction1 commenced prior to Transaction2, what would be the value of Quantity following the complete execution of both transactions?

TIME 1 VALUE of QUANTITY 50 50 2 3 TRANSACTION Transaction1 Transaction2 Transaction1 Transaction2 Transaction1 Transaction2 ACTION Read Quantity Read Quantity Quantity = Quantity + 35 Quantity = Quantity - 30 Write Quantity Write Quantity 4 5 85 6