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Doctors Medicines MCQs Q&A

  1. I only
  2. II only 
  3. Both I and II
  4. Neither I nor II
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1 Answers

Option 3 : Both I and II

Strict 2PL allows only schedules whose precedence graph is acyclic i.e. schedule is Conflict Serial.

In 2PL, transactions do not release exclusive locks until the transaction has committed or aborted i.e. schedule is recoverable.

Time stamp ordering schedule with Thomas write rule generate View serial schedule with BLIND WRITE. Because of BLIND WRITE it won't be Conflict Serial.

Option 3 is correct.
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Related Questions

In the following question, the 1st and the last part of the sentence/passage are numbered 1 and 6. The rest of the sentence/ passage is split into four parts and named P, Q, R and S. These four parts are not given in their proper order. Read the sentence/ passage and find out which of the four combinations is correct. 1. Customers of collapsed tour operator Thomas Cook have been getting in touch with the BBC to voice their frustration at delays in processing their refunds for holidays that never took place. P. Retired teachers Alan and Diane Holmes from Ripon in north Yorkshire booked a two-week holiday in Egypt, but initially thought their money was safe because the booking was made through another firm, Freedom Holidays. Q. The Civil Aviation Authority (CAA) originally said all valid claims made on the first day of its refund programme would be paid within 60 days, or by Friday 6 December. R."My wife always wanted to do the Egypt Nile cruise. It's been quite peaceful there these last two years, so we thought we'd best do it before it all takes off again," Mr Holmes told the BBC, referring to the possibility of civil unrest in the country. S. But now it says only two-thirds will be paid on time. 6. But as they later found out, the cruise itself and the hotel accommodation had been booked through Thomas Cook.?
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