Discussion
The lost update problem is when User A reads data that have been processed by a portion of a transaction from User B.
Answer: B
Correct answer: False
What is described is a dirty read - seeing data from a transaction that is only part way through. The lost update problem is different: two transactions each read the same value, each compute a new one from it, and each write back, so the second silently destroys the first. Resource locking exists to prevent it.
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