試題詳解

17. A banking system allows users to transfer money between accounts. The system must maintain atomicity and isolation. Consider the following transaction steps:
(1) Check if Account A has enough balance
(2) Deduct the amount from Account A
(3) Add the amount to Account B
(4) Commit the transaction
Which of the following database properties is most critical to prevent a scenario where money is deducted from Account A but not added to Account B due to a system crash?
(A) Durability
(B) Isolation
(C) Atomicity
(D) Consistency

(E) Concurrency