GATE CS 2024 Set 2 — Question 19
MCQ+1 / -0.33EasyACID PropertiesTransactions & ConcurrencyDatabases
Databases → Transactions & Concurrency → ACID Properties
Last updated
Question
Once the DBMS informs the user that a transaction has been successfully completed, its effect should persist even if the system crashes before all its changes are reflected on disk. This property is called
A.
durability
B.
atomicity
C.
consistency
D.
isolation
Correct answer
(A) durability
Solution
The property described is Durability. Durability ensures that once a transaction has been committed, it will remain so, even in the event of power loss, crashes, or errors.
- Atomicity ensures that all operations within a work unit are completed successfully; otherwise, the transaction is aborted at the point of failure and previous operations are rolled back.
- Consistency ensures that the database properly changes states upon a successfully committed transaction.
- Isolation enables transactions to operate independently of and transparent to each other.
More questions on Transactions & Concurrency
2024 Set 2 Q20In the context of owner and weak entity sets in the ER (Entity-Relationship) data model, which one…2024 Set 1 Q20Let S be the specification: "Instructors teach courses. Students register for courses. Courses are…2024 Set 1 Q21In a tree, the requirement of at least half-full (50%) node occupancy is relaxed for which…2024 Set 1 Q22Which of the following statements about a relation in first normal form (1NF) is/are…2024 Set 2 Q26Which of the following file organizations is/are I/O efficient for the scan operation in DBMS?
Practice GATE CS PYQs with adaptive difficulty
Timed practice, skill tracking, and AI explanations — free to start.
Start practicing free