1 votes 1 votes W1(A) W2(A) Commit1 Commit2 Is a A) Concurrent Schedule B) Recoverable Schedule C) Cascadeless rollback Recoverable schedule D) Strictly recoverable schedule Databases databases strict-schedule + – Vikas Verma asked Oct 2, 2018 Vikas Verma 514 views answer comment Share Follow See all 9 Comments See all 9 9 Comments reply Show 6 previous comments srestha commented Oct 2, 2018 reply Follow Share but is it a roll back?? 0 votes 0 votes BASANT KUMAR commented Oct 2, 2018 reply Follow Share Mam,it is a blind write any manipulation of variable A is occur between R(A) and write operation i.e W(A).in this question there is no read operation then both write operation can write anything .W2(A) does not goes to check what is value of A written by W1(A) in log file.it's my interpretation .if it's wrong correct me. 0 votes 0 votes Shaik Masthan commented Oct 3, 2018 reply Follow Share simply saying, there is no dirty read ===> cascadeless recoverable schedule. (yes option a and b also true) But note that it is not strict schedule 0 votes 0 votes Please log in or register to add a comment.
0 votes 0 votes It will be Cascadeless rollback or cascadeless schedule and recoverable schedule. A,B,C are true. Dharmendra Verma answered Oct 9, 2018 Dharmendra Verma comment Share Follow See all 0 reply Please log in or register to add a comment.