1
GATE CSE 2025 Set 2
MCQ (More than One Correct Answer)
+1
-0.33

An audit of a banking transactions system has found that on an earlier occasion, two joint holders of account $A$ attempted simultaneous transfers of Rs. 10000 each from account $A$ to account $B$. Both transactions read the same value, Rs. 11000, as the initial balance in $A$ and were allowed to go through. $B$ was credited Rs. 10000 twice. $A$ was debited only once and ended up with a balance of Rs. 1000. Which of the following properties is/are certain to have been violated by the system?

A
Atomicity
B
Consistency
C
Isolation
D
Durability
2
GATE CSE 2025 Set 2
MCQ (More than One Correct Answer)
+2
-0

Consider the following relational schema along with all the functional dependencies that hold on them.

$$\begin{aligned} & R 1(A, B, C, D, E):\{D \rightarrow E, E A \rightarrow B, E B \rightarrow C\} \\ & R 2(A, B, C, D):\{A \rightarrow D, A \rightarrow B, C \rightarrow A\} \end{aligned}$$

Which of the following statement(s) is/are TRUE?

A
$R 1$ is in 3NF
B
$R 2$ is in 3 NF
C
$R 1$ is NOT in 3 NF
D
$R 2$ is NOT in 3NF
3
GATE CSE 2025 Set 2
MCQ (More than One Correct Answer)
+2
-0

Consider the database transactions T 1 and T 2, and data items X and Y . Which of the schedule(s) is/are conflict serializable?

GATE CSE 2025 Set 2 Database Management System - Transactions and Concurrency Question 1 English

A
$\mathrm{R} 1(\mathrm{X}), \mathrm{W} 2(\mathrm{X}), \mathrm{W} 1(\mathrm{Y}), \mathrm{W} 2(\mathrm{Y}), \mathrm{R} 1(\mathrm{X}), \mathrm{W} 1(\mathrm{X}), \operatorname{COMMIT}(\mathrm{T} 2), \operatorname{COMMIT}(\mathrm{T} 1)$
B
$\mathrm{W} 2(\mathrm{X}), \mathrm{R} 1(\mathrm{X}), \mathrm{W} 2(\mathrm{Y}), \mathrm{W} 1(\mathrm{Y}), \mathrm{R} 1(\mathrm{X}), \mathrm{COMMIT}(\mathrm{T} 2), \mathrm{W} 1(\mathrm{X}), \operatorname{COMMIT}(\mathrm{T} 1)$
C
$\mathrm{R} 1(\mathrm{X}), \mathrm{W} 1(\mathrm{Y}), \mathrm{W} 2(\mathrm{X}), \mathrm{W} 2(\mathrm{Y}), \mathrm{R} 1(\mathrm{X}), \mathrm{W} 1(\mathrm{X}), \mathrm{COMMIT}(\mathrm{T} 1), \operatorname{COMMIT}(\mathrm{T} 2)$
D
$\mathrm{W} 2(\mathrm{X}), \mathrm{R} 1(\mathrm{X}), \mathrm{W} 1(\mathrm{Y}), \mathrm{W} 2(\mathrm{Y}), \mathrm{R} 1(\mathrm{X}), \mathrm{COMMIT}(\mathrm{T} 2), \mathrm{W} 1(\mathrm{X}), \operatorname{COMMIT}(\mathrm{T} 1)$
4
GATE CSE 2025 Set 2
MCQ (More than One Correct Answer)
+2
-0

Consider the following relational schema:

Students ($$\mathrm{\underline {rollno:integer}}$$, name: string, age: integer, cgpa: real)

Courses ($$\mathrm{\underline {courseno:integer}}$$, cname: string, credits: integer)

Enrolled ($$\mathrm{\underline {rollno:integer}}$$, $$\mathrm{\underline {courseno:integer}}$$, grade: string)

Which of the following options is/are correct SQL query/queries to retrieve the names of the students enrolled in course number (i.e., courseno) $1470 ?$

A
GATE CSE 2025 Set 2 Database Management System - Structured Query Language Question 1 English Option 1
B
GATE CSE 2025 Set 2 Database Management System - Structured Query Language Question 1 English Option 2
C
GATE CSE 2025 Set 2 Database Management System - Structured Query Language Question 1 English Option 3
D
GATE CSE 2025 Set 2 Database Management System - Structured Query Language Question 1 English Option 4
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