Database Transaction Management MCQs in DBMS

By: Prof. Dr. Fazal Rehman Shamil | Last updated: September 23, 2024

MCQs on Database Transaction Management in DBMS

1. What is a transaction in the context of a DBMS?A. A single operation on the database
   B. A sequence of operations performed as a single logical unit of work
   C. A backup process of the database
   D. A type of query execution
   Answer: B. A sequence of operations performed as a single logical unit of work
2. Which property of a transaction ensures that all operations within the transaction are completed successfully or none at all?A. Consistency
   B. Atomicity
   C. Isolation
   D. Durability
   Answer: B. Atomicity
3. Which ACID property ensures that a transaction leaves the database in a valid state?A. Atomicity
   B. Consistency
   C. Isolation
   D. Durability
   Answer: B. Consistency
4. What does the Isolation property in transactions ensure?A. Transactions are executed all at once or not at all
   B. The database remains in a consistent state
   C. Transactions do not interfere with each other
   D. All changes are permanent once committed
   Answer: C. Transactions do not interfere with each other
5. Which property ensures that the changes made by a committed transaction are permanent?A. Atomicity
   B. Consistency
   C. Isolation
   D. Durability
   Answer: D. Durability
6. What is the purpose of the COMMIT statement in a transaction?A. To abort the transaction
   B. To make all changes made in the transaction permanent
   C. To start a new transaction
   D. To undo all changes made in the transaction
   Answer: B. To make all changes made in the transaction permanent
7. What is a ‘rollback’ in the context of a DBMS?A. Saving the changes made by a transaction
   B. Undoing all changes made by a transaction
   C. Starting a new transaction
   D. Ending a transaction
   Answer: B. Undoing all changes made by a transaction
8. Which of the following is used to ensure that a transaction has not been interrupted and is completed successfully?A. Rollback
   B. Locking
   C. Checkpoint
   D. Commit
   Answer: D. Commit
9. What is a ‘deadlock’ in database transaction management?A. A situation where a transaction is unable to proceed because it is waiting for a resource held by another transaction
   B. A completed transaction that is waiting for commit
   C. A process of backing up the database
   D. A transaction that has been aborted
   Answer: A. A situation where a transaction is unable to proceed because it is waiting for a resource held by another transaction
10. Which of the following is a concurrency control technique used in DBMS?A. Rollback
    B. Two-phase locking
    C. Commit
    D. Checkpoint
    Answer: B. Two-phase locking
11. What is the purpose of a ‘log’ in the context of transaction management?A. To store the results of a transaction
    B. To keep a record of all transactions and changes to the database
    C. To execute a transaction
    D. To back up the database
    Answer: B. To keep a record of all transactions and changes to the database
12. In the context of database transactions, what is ‘serializability’?A. The ability to execute multiple transactions simultaneously
    B. Ensuring that transactions produce the same result as if they were executed in a serial order
    C. The process of rolling back a transaction
    D. The process of committing a transaction
    Answer: B. Ensuring that transactions produce the same result as if they were executed in a serial order
13. What is the main purpose of using ‘lock’ mechanisms in transaction management?A. To increase transaction speed
    B. To ensure database consistency and isolation
    C. To execute transactions in parallel
    D. To store transaction results
    Answer: B. To ensure database consistency and isolation
14. Which of the following describes the ‘write-ahead logging’ protocol?A. Logging is done after the changes are written to the database
    B. Changes are written to the log before they are applied to the database
    C. Logs are written only if the transaction is successful
    D. Logs are written at the end of the day
    Answer: B. Changes are written to the log before they are applied to the database
15. What is the ‘two-phase commit protocol’ used for?A. Ensuring atomicity in distributed transactions
    B. Enhancing database security
    C. Improving transaction speed
    D. Reducing the size of the transaction log
    Answer: A. Ensuring atomicity in distributed transactions

 

More MCQs Of Database Systems

1. Database Models MCQs in DBMS
   1. Hierarchical model MCQs in DBMS
   2. Network model MCQs in DBMS
   3. Relational model MCQs in DBMS
   4. Object-oriented model MCQs in DBMS
   5. NoSQL databases MCQs in DBMS
2. Relational Database Model MCQs in DBMS
   1. tables, attributes, tuples, and relations MCQs in DBMS
   2. Primary keys and foreign keys MCQs in DBMS
   3. Integrity constraints MCQs in DBMS
3. SQL (Structured Query Language) MCQs in DBMS
   1. Data Definition Language (DDL) MCQs in DBMS
   2. Data Manipulation Language (DML) MCQs in DBMS
   3. Data Control Language (DCL) MCQs in DBMS
   4. Transaction Control Language (TCL) MCQs in DBMS
   5. Advanced SQL queries and functions MCQs in DBMS
4. Database Design MCQs in DBMS
   1. Entity-Relationship (ER) modeling MCQs in DBMS
   2. Extended ER modeling MCQs in DBMS
   3. Normalization and normal forms (1NF, 2NF, 3NF, BCNF) MCQs in DBMS
   4. Denormalization MCQs in DBMS
5. Database Management System Architecture MCQs in DBMS
   1. Three-schema architecture (external, conceptual, internal) MCQs in DBMS
   2. Data independence MCQs in DBMS
   3. DBMS components and functions MCQs in DBMS
6. Storage and File Structure MCQs in DBMS
   1. Data storage on physical media MCQs in DBMS
   2. File organization and access methods MCQs
   3. Indexing (B-trees, hash indexing) MCQs in DBMS
   4. RAID technology MCQs in DBMS
7. Query Processing and Optimization MCQs in DBMS
8. Database Transaction Management MCQs in DBMS
   1. ACID properties (Atomicity, Consistency, Isolation, Durability) MCQs in DBMS
   2. Transaction states and lifecycle MCQs in DBMS
   3. Concurrency control techniques (locking, timestamping, multiversion) MCQs in DBMS
   4. Deadlock detection and resolution MCQs in DBMS
9. Database Security and Authorization MCQs in DBMS
   1. Authentication and authorization mechanisms MCQs in DBMS
   2. Data encryption techniques MCQs in DBMS
   3. Role-based access control MCQs in DBMS
   4. SQL injection prevention MCQs in DBMS
10. Backup and Recovery MCQs in DBMS
    1. Backup types and strategies MCQs in DBMS
    2. Recovery techniques (log-based, shadow paging) MCQs in DBMS
    3. Disaster recovery planning MCQs in DBMS
11. Distributed Databases MCQs in DBMS
    1. Distributed database architecture MCQs MCQs in DBMS
    2. Data fragmentation, replication, and allocation in DBMS
    3. Distributed query processing MCQs in DBMS
    4. Consistency models and protocols MCQs in DBMS

1. SET 1: database design mcqs (database design mcqs )
2. SET 2: database mcqs with answers pdf (database mcqs with answers pdf )
3. SET 3: modern database management 12th edition mcqs (modern database management 12th edition mcqs)
4. SET 4: database systems mcqs (database systems mcqs)
5. SET 5: dbms mcqs (dbms mcqs )
6. SET 6: dbms mcqs with answers (dbms mcqs with answers)
7. SET 7: solved mcqs of dbms (solved mcqs of dbms)
8. SET 8: dbms mcqs with answers pdf(dbms mcqs with answers pdf)
9. SET 9: relational database management system mcqs(relational database management system mcqs)
10. SET 10: solved mcqs of database management system(solved mcqs of database management system)
11. SET 11: basic database mcqs pdf (basic database mcqs pdf)
12. SET 12: relational database management system mcqs (relational database management system mcqs )
13. SET 13: database mcqs online test (database mcqs online test)
14. SET 14: database interview questions mcqs (database interview questions mcqs)
15. SET 15: database developer mcqs (database developer mcqs)
16. SET 16: database Repeated mcqs (database Repeated mcqs)
17. SET 17: Database mcqs PPSC (Database mcqs PPSC)
18. SET 18: Database mcqs FPSC (Database mcqs FPSC)
19. SET 19: DBMS mcqs FPSC (DBMS mcqs FPSC)

New Arrival

Database interview questions