GATE CSE 2024 Set 2 | GATE CSE Year Wise Previous Years Questions

GATE CSE 2024 Set 2

MCQ (Single Correct Answer)

-0.33

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

durability

atomicity

consistency

isolation

GATE CSE 2024 Set 2

MCQ (Single Correct Answer)

-0.33

In the context of owner and weak entity sets in the ER (Entity-Relationship) data model, which one of the following statements is TRUE?

The weak entity set MUST have total participation in the identifying relationship

The owner entity set MUST have total participation in the identifying relationship

Both weak and owner entity sets MUST have total participation in the identifying relationship

Neither weak entity set nor owner entity set MUST have total participation in the identifying relationship

GATE CSE 2024 Set 2

MCQ (More than One Correct Answer)

-0

Which of the following file organizations is/are I/O efficient for the scan operation in DBMS?

Sorted

Heap

Unclustered tree index

Unclustered hash index

GATE CSE 2024 Set 2

MCQ (More than One Correct Answer)

-0

Which of the following statements about the Two Phase Locking (2PL) protocol is/are TRUE?

2PL permits only serializable schedules

With 2PL, a transaction always locks the data item being read or written just before every operation and always releases the lock just after the operation

With 2PL, once a lock is released on any data item inside a transaction, no more locks on any data item can be obtained inside that transaction

A deadlock is possible with 2PL

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