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Database Systems-5268-4-1st25
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Assume that you have the following relation; R(a,b,c)
a b c
----------
1 A F
2 B M
3 T F
4 R M
5 A F
Then the number of tuples of the projection operation on c will be = -----
Assume that you have the following relation; R(a,b,c)
a b c
----------
1 A F
2 B M
3 T F
4 R M
5 A F
And S is a relation with one attribute called c and has one tuple with the value 'F'.
Then the cardinality of R divided by S will be = -----
Assume that you have the following relation; R(a,b,c)
a b c
----------
1 A F
2 B M
3 T F
4 F M
5 A F
Then the number of tuples of the selection operation on R with predicate c= 'F' will be = -----
Assume that you have the following relation; R(a,b,c)
a b c
----------
1 A F
2 B M
3 T F
4 R Null
Then the cardinality and degree of RxR will be ----- and ----- respectively.
In the following UML ER-Model, if each course can have zero or more prerequisite courses, then the relationship between course and course is:
In the following UML ER-Model, if Y and n are more than 1, then the relationship between Course and Teacher is: