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Deadlocks DBMS Questions And Answers

Here you can find Deadlocks DBMS Questions and Answers.

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Deadlocks DBMS Questions and Answers

1. A system is in a ______ state if there exists a set of transactions such that every transaction in the set is waiting for another transaction in the set.

Deadlocks DBMS Questions and Answers

2. The deadlock state can be changed back to stable state by using _____________ statement.

Deadlocks DBMS Questions and Answers

3. What are the ways of dealing with deadlock ?

Deadlocks DBMS Questions and Answers

4. 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

Deadlocks DBMS Questions and Answers

5. 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

Deadlocks DBMS Questions and Answers

6. The deadlock in a set of transaction can be determined by

Deadlocks DBMS Questions and Answers

7. A deadlock exists in the system if and only if the wait-for graph contains a ___________.

Deadlocks DBMS Questions and Answers

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

Deadlocks DBMS Questions and Answers

9. __________ rollback requires the system to maintain additional information about the state of all the running transactions.

Deadlocks DBMS Questions and Answers

10. Which of these is data type long literal?

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Deadlocks - DBMS Questions and Answers

This is the DBMS questions and answers section on "Deadlocks" with explanation for various interview, competitive examination and entrance test. Solved examples with detailed answer description, explanation are given and it would be easy to understand. What are Deadlocks in DBMS? You can know and understand the answer to the question by practicing the Deadlocks DBMS Questions and Answers. We have arranged the frequently asked questions in the below Deadlocks DBMS Online Test. So, the aspirants can take part in the Deadlocks DBMS Quiz and know the various type of questions. We have provided the Deadlocks DBMS Objective Type Questions along with the explanation. It is easy for the aspirants to check the Deadlocks DBMS Multiple Choice Questions and to understand the descriptions. Move to the below portions of this post and practice the questions in the Deadlocks DBMS MCQ Quiz.



Deadlocks DBMS Questions - Deadlocks DBMS Quiz Details

Online Test Name Deadlocks
Exam Type Multiple Choice Questions
Category Computer Science Engineering Quiz
Number of Questions 14


In a database, a deadlock is a situation in which two or more transactions are waiting for one another to give up the locks. For example, Transaction A might hold a lock on some rows in the "Students" table and needs to update some rows in the "Teachers" table to finish. By referring to some examples, the applicants can know the situation of the Deadlock. In addition to this, aspirants can also understand the concept by practicing the Deadlocks DBMS Quiz. So, all the competitors need to participate in the Deadlocks DBMS Online Test and know the particulars of the Deadlocks.



Deadlocks DBMS Multiple Choice Questions

Aspirants can know the information about the Deadlocks DBMS Quiz with the help of the above table. All the contenders can practice the questions in the Deadlocks DBMS Online Test to score high in the DBMS section at the time of exams. The individuals who will actively take part in the mock tests can know the different type of questions along with the answers. Therefore, the students need to practice the Deadlocks DBMS Mock Test which is provided in this article. We suggest the competitors take part in the Deadlocks DBMS MCQ Quiz to increase the knowledge in the Database Management System topic.

Deadlocks MCQ Quiz Answers with Solutions

Are you worrying about the other subjects online tests? On our homepage @ Allindiaexams.in we have gathered all the topics quizzes. So, the candidates can refer to our website and take part in the quizzes. For the Deadlocks DBMS Questions, we have arranged the solutions along with the explanations. Hence, the contenders can check and know the right option among the given alternatives.


1. A system is in a ______ state if there exists a set of transactions such that every transaction in the set is waiting for another transaction in the set.
  • A. Idle
  • B. Waiting
  • C. Deadlock
  • D. Ready
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Answer & Explanation

Answer: Option C

Explanation:

Deadlock

When one data item is waiting for another data item in a transaction then system is in deadlock.

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2. The deadlock state can be changed back to stable state by using _____________ statement.
  • A. Commit
  • B. Rollback
  • C. Savepoint
  • D. Deadlock
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Answer & Explanation

Answer: Option B

Explanation:

Rollback

Rollback is used to rollback to the point before lock is obtained.

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3. What are the ways of dealing with deadlock ?
  • A. Deadlock prevention
  • B. Deadlock recovery
  • C. Deadlock detection
  • D. All of the mentioned
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Answer & Explanation

Answer: Option D

Explanation:

All of the mentioned

Deadlock prevention is also called as deadlock recovery.Prevention is commonly used if the probability that the system would enter a deadlock state is relatively high; otherwise, detection and recovery are more efficient.

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4. 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
  • A. Wait-die
  • B. Wait-wound
  • C. Wound-wait
  • D. Wait
  • View Answer
  • Workspace
  • Report
  • Discuss

Answer & Explanation

Answer: Option A

Explanation:

Wait-die

The wait–die scheme is a non-preemptive technique.

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5. 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
  • View Answer
  • Workspace
  • Report
  • Discuss

Answer & Explanation

Answer: Option C

Explanation:

Wound-wait

The wound–wait scheme is a preemptive technique. It is a counterpart to the wait–die scheme.

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Related Topics:

  • Aggregate Functions
  • Transactions
  • Indexes
  • Data Types
  • OLAP
  • RAID
  • Relational Algebra
  • Joins
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