Which of the following timestamp is used to record the time at which the transaction started execution?(a) Start(i)(b) Validation(i)(c) Finish(i)(d) Write(i)This question was addressed to me during an online interview.My enquiry is from Validation Based Protocols in division Concurrency Control of RDBMS

Which of the following timestamp is used to record the time at which t

1.	Which of the following timestamp is used to record the time at which the transaction started execution?(a) Start(i)(b) Validation(i)(c) Finish(i)(d) Write(i)This question was addressed to me during an online interview.My enquiry is from Validation Based Protocols in division Concurrency Control of RDBMS
Answer» RIGHT choice is (a) Start(i) To EXPLAIN I would say: There are three different timestamps for each TRANSACTION start(i), validation(i), finish(i). Start(i) is USED to record the time at which the transaction EXECUTION started.

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