Ask a Question

When transaction Ti requests a data item currently held by Tj, Ti is allowed to wait only if it has a timestamp larger than that of Tj (that is, Ti is younger than Tj ). Otherwise, Tj is rolled back (Tj is wounded by Ti). This is

in Education by
When transaction Ti requests a data item currently held by Tj, Ti is allowed to wait only if it has a timestamp larger than that of Tj (that is, Ti is younger than Tj ). Otherwise, Tj is rolled back (Tj is wounded by Ti). This is (a) Wait-die (b) Wait-wound (c) Wound-wait (d) Wait The question was asked in examination. My query is from Deadlocks in portion Concurrency Control of Database Management Select the correct answer from above options Interview Questions and Answers, Database Interview Questions and Answers for Freshers and Experience

1 Answer

0 votes
by
Correct answer is (c) Wound-wait The explanation is: The wound–wait scheme is a preemptive technique. It is a counterpart to the wait–die scheme.

Related questions

0 votes
Q: When transaction Ti requests a data item currently held by Tj, Ti is allowed to wait only if it has a timestamp smaller than that of Tj (that is, Ti is older than Tj). Otherwise, Ti is rolled back (dies). This is
    When transaction Ti requests a data item currently held by Tj, Ti is allowed to wait only if it ... Answers, Database Interview Questions and Answers for Freshers and Experience...
asked Oct 11, 2021 in Education by JackTerrance
0 votes
Q: When a transaction Ti attempts to update a data item, it requests a _________ on that data item.
    When a transaction Ti attempts to update a data item, it requests a _________ on that data item. ... Snapshot Isolation topic in chapter Concurrency Control of Database Management...
asked Oct 10, 2021 in Education by JackTerrance
0 votes
Q: The __________ requires that each transaction Ti executes in two or three different phases in its lifetime, depending on whether it is a read-only or an update transaction.
    The __________ requires that each transaction Ti executes in two or three different phases in its lifetime ... topic in section Concurrency Control of Database Management...
asked Oct 10, 2021 in Education by JackTerrance
0 votes
Q: If transaction Ti gets an explicit lock on the file Fc in exclusive mode, then it has an ­­­­­­__________ on all the records belonging to that file.
    If transaction Ti gets an explicit lock on the file Fc in exclusive mode, then it has an ... Based Protocols topic in section Concurrency Control of Database Management...
asked Oct 10, 2021 in Education by JackTerrance
0 votes
Q: The _______________ policy, allows a transaction to commit even if it has modified some blocks that have not yet been written back to disk.
    The _______________ policy, allows a transaction to commit even if it has modified some blocks that have ... Buffer Management in chapter Recovery System of Database Management...
asked Oct 10, 2021 in Education by JackTerrance
0 votes
Q: A die is rolled thrice, find the probability of getting a larger number each time than the previous number.
    A die is rolled thrice, find the probability of getting a larger number each time than the previous number. A. 5 ... D. none of these Select the correct answer from above options...
asked Nov 15, 2021 in Education by JackTerrance
0 votes
Q: __________ is increasingly being used in server systems to improve performance by caching frequently used data, since it provides faster access than disk, with larger storage capacity than main memory.
    __________ is increasingly being used in server systems to improve performance by caching frequently used data, ... in portion Storage and File Structures of Database Management...
asked Oct 10, 2021 in Education by JackTerrance
0 votes
Q: Write a program in Java to input any age and determine whether the age is valid or  invalid. If age is greater than or equal to 18 then it is valid otherwise invalid.
    Write a program in Java to input any age and determine whether the age is valid or  invalid. If age is ... is valid otherwise invalid. Select the correct answer from above options...
asked Dec 24, 2021 in Education by JackTerrance
0 votes
Q: A die is rolled. If the outcome is an odd number. What Is the probability that It is a number greater than 1.
    A die is rolled. If the outcome is an odd number. What Is the probability that It is a number greater than 1. Select the correct answer from above options...
asked Nov 25, 2021 in Education by JackTerrance
0 votes
Q: A die is rolled. If the outcome is an even number, what is the probability that it is a number greater than 2?
    A die is rolled. If the outcome is an even number, what is the probability that it is a number greater than 2? Select the correct answer from above options...
asked Nov 22, 2021 in Education by JackTerrance
0 votes
Q: A die is rolled. If the outcome is an even number, what is the probability that it is a number greater than 2?
    A die is rolled. If the outcome is an even number, what is the probability that it is a number greater than 2? Select the correct answer from above options...
asked Nov 17, 2021 in Education by JackTerrance
0 votes
Q: A block that is not allowed to be written back to disk is said to be ______________
    A block that is not allowed to be written back to disk is said to be ______________ (a) Pinned (b) ... Buffer topic in chapter Storage and File Structures of Database Management...
asked Oct 10, 2021 in Education by JackTerrance
0 votes
Q: ____________ denotes the largest timestamp of any transaction that executed write(Q) successfully.
    ____________ denotes the largest timestamp of any transaction that executed write(Q) successfully. (a) W- ... Database Interview Questions and Answers for Freshers and Experience...
asked Oct 11, 2021 in Education by JackTerrance
0 votes
Q: A coin is tossed and then a die is rolled only in case a head is shown on the coin. Describe the sample space for this experiment.
    A coin is tossed and then a die is rolled only in case a head is shown on the coin. Describe the sample space for this experiment. Select the correct answer from above options...
asked Nov 22, 2021 in Education by JackTerrance
0 votes
Q: In a _____________ operations do not wait for requests to produce tuples, but instead generate the tuples eagerly.
    In a _____________ operations do not wait for requests to produce tuples, but instead generate the tuples ... Database Interview Questions and Answers for Freshers and Experience...
asked Oct 11, 2021 in Education by JackTerrance

© Copyright 2018-2023 www.Blogmepost.com. All rights reserved. Developed by Blogmepost.

...