0 votes 0 votes Q50. how many statements is true unrepeatable read also know as read write conflict Strict 2PL may have read write conflict 1st one given as true now my doubt is we know that read write conflict that is https://www.revolvy.com/page/Read%E2%80%93write-conflict and we also know unrepeatable read https://www.youtube.com/watch?v=mLNfpqybSZM . how we can call unrepeatable read as read write conflict 2nd one given as false but i think it is true Databases databases transaction-and-concurrency made-easy-test-series madeeasy-testseries-2018 + – Gurdeep Saini asked Jan 16, 2019 • edited Mar 3, 2019 by ajaysoni1924 Gurdeep Saini 594 views answer comment Share Follow See 1 comment See all 1 1 comment reply OneZero commented Jan 16, 2019 reply Follow Share Any transaction written in 2PL format will be conflict serializable. because it is conflict serializable we do not have read-write conflict. and yes unrepeatable read is also known as read write problem/conflict. 0 votes 0 votes Please log in or register to add a comment.
2 votes 2 votes 1.TRUE,The unrepeatable problem occurs when two or more read operations of the same transaction read different values of the same variable. 2.FALSE,Strict 2PL is recoverable + conflict serializable Sanandan answered Aug 23, 2020 Sanandan comment Share Follow See all 0 reply Please log in or register to add a comment.
