1
GATE CSE 2015 Set 3
+1
-0.3
Consider the following relation
$$\,\,\,\,\,\,\,\,$$ Cinema(theater, address, capacity)
Which of the following options will be needed at the end of the $$SQL$$ query

$$\,\,\,\,\,\,\,\,$$ SELECT $$P1.$$address
$$\,\,\,\,\,\,\,\,$$ FROM Cinema $$P1$$

such that it always finds the addresses of theaters with maximum capacity?

A
WHERE $$P1$$.capacity >= All (select $$P2$$.capacity from Cinema $$P2$$)
B
WHERE $$P1$$.capacity >= Any (select $$P2$$.capacity from Cinema $$P2$$)
C
WHERE $$P1$$.capacity > All (select max($$P2$$.capacity) from Cinema $$P2$$)
D
WHERE $$P1$$.capacity > Any (select max($$P2$$.capacity) from Cinema $$P2$$)
2
GATE CSE 2015 Set 1
+1
-0.3
SELECT operation in SQL is equivalent to
A
the selection operation in relational algebra
B
the selection operation in relational algebra, except that SELECT in SQL retains duplicates
C
the projection operation in relational algebra
D
the projection operation in relational algebra, except that SELECT in SQL retains duplicates
3
GATE CSE 2014 Set 1
+1
-0.3
Given the following statements:

S1: A foreign key declaration can always be replaced by an equivalent check assertion in SQL.

S2: Given the table R(a,b,c) where a and b together form the primary key, the following is a valid table definition.

CREATE TABLE S (
a INTEGER,
d INTEGER,
e INTEGER,
PRIMARY KEY (d),
FOREIGN KEY (a) references R)

Which one of the following statements is CORRECT?

A
S1 is TRUE and S2 is FALSE.
B
Both S1 and S2 are TRUE.
C
S1 is FALSE and S2 is TRUE.
D
Both S1 and S2 are FALSE.
4
GATE CSE 2012
+1
-0.3
Which of the following statements are TRUE about an SQL query?

P: An SQL query can contain a HAVING clause even if it does not have a GROUP BY clause
Q: An SQL query can contain a HAVING clause only if it has a GROUP BY clause
R: All attributes used in the GROUP BY clause must appear in the SELECT clause
S: Not all attributes used in the GROUP BY clause need to appear in the SELECT clause

A
P and R
B
P and S
C
Q and R
D
Q and S
GATE CSE Subjects
EXAM MAP
Medical
NEET