Question

State true or false: Snapshot isolation prevents lost updates

(a) True

(b) False

This question was posed to me in an international level competition.

I'd like to ask this question from Multiversion Schemes, Snapshot Isolation in section Concurrency Control of RDBMS

Answer 1

Correct choice is (a) True

To explain I would say: Snapshot isolation prevents lost updates because it does not allow two transactions to simultaneously write on the same database.