Question
relation R(ABCD) has these dependencies {A → B, B →
C,C → D} and it is decomposed into three relations R1(AB) , R2(BC), AND R3(CD). State true or false if the decomposition is dependency preserving or not?Solution
The decomposition is dependency preserving. Because the union of all the functional dependencies from R1, R2 AND R3 is equal to the dependencies that are in relation R.
What will come in the place of question mark?
A series is given with two terms missing. Choose the correct alternatives from the given ones that will come in the place of blanks respectively and com...
Find the missing term?
Select the missing number from the given responses.
Find the missing number.
Select the number from among the given options that can replace the question mark (?) in the following table.
Find the missing number.
20, 30, 42, 56, 72, ?
Select the combination of numbers that when placed sequentially in the blanks of the given series will complete the series.
3 _ 3 _ 5 3 3 5 _ 3 3...
Choose the correct alternative from the given ones that will complete the series.
3.5 , ?, 8.3, 10.7, 13.1 , 15.5
Select the number from among the given option that can replace the question mark (?) in the following series.
4, 21, 86, 261, 526, ?
