What is the number of rows returned for the given Relation R if query passed is “∏Name(R)”?
|
Name |
|
X |
|
X |
|
X |
|
Y |
|
Z |
1
1
2
2
3
3
4
4
What is the number of rows returned for the given Relation R if query passed is “∏Name(R)”?
|
Name |
|
X |
|
X |
|
X |
|
Y |
|
Z |