If the first update is overwritten by a second, it is called as a _______ update(a) Useful(b) Overlapping(c) Lost(d) ConcurrentThis question was posed to me in an online interview.I would like to ask this question from Multiversion Schemes, Snapshot Isolation topic in section Concurrency Control of RDBMS

If the first update is overwritten by a second, it is called as a ____

1.	If the first update is overwritten by a second, it is called as a _______ update(a) Useful(b) Overlapping(c) Lost(d) ConcurrentThis question was posed to me in an online interview.I would like to ask this question from Multiversion Schemes, Snapshot Isolation topic in section Concurrency Control of RDBMS
Answer» RIGHT option is (c) LOST The explanation is: If the FIRST update is overwritten by a second, it is called as a lost update. This generally occurs whenever TWO transactions are allowed to write on the database.

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