Ask a Question

Selecting the victim to be rollbacked to the previous state is determined by the minimum cost. The factors determining cost of rollback is

← Prev Question Next Question →
+1 vote
805 views
in Database Management by (119k points)
Selecting the victim to be rollbacked to the previous state is determined by the minimum cost. The factors determining cost of rollback is

(a) How long the transaction has computed, and how much longer the transaction will compute before it completes its designated task

(b) How many data items the transaction has used

(c) How many more data items the transaction needs for it to complete

(d) All of the mentioned

I got this question by my school teacher while I was bunking the class.

I would like to ask this question from Deadlocks topic in portion Concurrency Control of Database Management

1 Answer

+1 vote
by (773k points)
selected by
 
Best answer
The correct choice is (d) All of the mentioned

For explanation: We should roll back those transactions that will incur the minimum cost.

Related questions

Welcome to TalkJarvis QnA, a question-answer community website for the people by the people. On TalkJarvis QnA you can ask your doubts, curiosity, questions and whatever going in your mind either related to studies or others. Experts and people from different fields will answer.

Most popular tags

biology – class 12 biology – class 11 construction & building materials chemistry – class 12 electronic devices & circuits network theory data structures & algorithms ii cell biology ic engine insurance finance money computational fluid dynamics engineering physics i discrete mathematics chemistry – class 11 aerodynamics casting-forming-welding i engineering mathematics operating system casting-forming-welding ii engineering drawing mysql engineering geology digital circuits wireless mobile energy management electrical measurements digital communications cyber security analytical instrumentation embedded systems electric drives cytogenetics advanced machining computer fundamentals life sciences basic civil engineering iot design of electrical machines physics – class 12 applied chemistry dairy engineering basic chemical engineering cloud computing microprocessor bioinformatics aircraft design aircraft maintenance software engineering drug biotechnology digital signal processing biochemistry data structures & algorithms i automotive engine design avionics engineering material & metallurgy energy engineering cognitive radio unix electrical machines biomedical instrumentation object oriented programming electromagnetic theory power electronics analog communications bioprocess engineering civil engineering drawing engineering metrology physics – class 11 mathematics – class 12 engineering chemistry i basic electrical engineering unit processes mongodb signals and systems cryptograph & network security hadoop mathematics – class 11 engineering physics ii html control systems engineering mechanics antennas analog circuits computer network java sql server javascript concrete technology chemical process calculation artificial intelligence design of steel structures c++ database management computer architecture engineering chemistry ii corrosion engineering chemical technology dc machines
Powered by TalkJarvis
...