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Byju's Answer
Standard VII
Mathematics
Factorial
The Relation ...
Question
The Relation R(ABCDEF) with FD set
F
=
{
A
B
→
C
D
E
F
,
C
→
A
,
D
→
B
,
C
→
D
,
E
→
F
,
B
→
E
}
The number of candidate keys of a relation R is
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Solution
option (c)
the candidate keys of a relation is
: AB, AD and C.
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4
Similar questions
Q.
Consider R = (A, B, C, D, E, F) be a relation schema with the following dependencies
A
→
B
,
A
→
C
,
C
D
→
E
,
C
D
→
F
,
B
→
E
Which of the following is candidate key of R ?
Q.
C
o
n
s
i
d
e
r
a
r
e
l
a
t
i
o
n
R
(
A
,
B
,
C
,
D
,
E
)
w
i
t
h
f
u
n
c
t
i
o
n
a
l
d
e
p
e
n
d
e
n
c
i
e
s
:
N
u
m
b
e
r
o
f
c
a
n
d
i
d
a
t
e
s
k
e
y
i
n
a
b
o
v
e
r
e
l
a
t
i
o
n
R
i
s
_
_
_
_
_
_
.
F
=
(
A
E
→
C
,
C
D
→
E
,
C
→
A
,
C
→
D
,
D
→
E
]
Q.
Consider a relation R(A,B,C,D,E,F) with functional dependencies
F =(
A
→
B
C
B
→
E
D
→
A
F
F
→
C
B
→
A
D
)
The number of super keys present in the relation are ________
Q.
Consider the relation Relation (ABCDEF) with FDs:
A
→
F
C
C
→
D
B
→
E
Find the key
Q.
C
o
n
s
i
d
e
r
a
r
e
l
a
t
i
o
n
R
(
A
,
B
,
C
,
D
,
E
)
w
i
t
h
t
h
e
f
o
l
l
o
w
i
n
g
d
e
p
e
n
d
e
n
c
i
e
s
:
M
a
x
i
m
u
m
p
o
s
s
i
b
l
e
s
u
p
e
r
k
e
y
s
o
n
r
e
l
a
t
i
o
n
R
i
s
_
_
_
_
_
_
_
.
F
=
(
A
→
B
C
,
C
→
A
E
,
B
→
D
,
C
→
B
)
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