5 votes
3 answers
43
A relation R(A,B,C,D,E,F) holds following FDs$AB\rightarrow C$$C\rightarrow D$$D\rightarrow EA$$E\rightarrow F$$F\rightarrow B$The number of minimal candidate keys of R a...
1 votes
1 answer
44
A certain JK-FF has propagation delay $t_{pd}=12$ ns. The largest MOD of the counter suc that, the counter can be designed from these FF's which will operate upto 10 MHz ...
0 votes
1 answer
46
A combinational circuit is designed to multiply the input by 9. The input is 4 bit BCD and the output is binary. How many output lines are required?
6 votes
3 answers
48
The truth table for the combinational circuit is shown below:What is the minimum number of two input NAND gates required to realize this logic circuit?
2 votes
1 answer
52
How to delete key 15 from below B+ tree?
2 votes
1 answer
54
Consider relation R(ABCD) and FD = {AB->CD,C->A,D->B}. Which of the following is false?(A) C->A is a partial dependency(B) C->A is a transitive dependency(C) D->B is a pa...
0 votes
4 answers
59
Cache access time Tc = 100 nsMemory access time Tm = 500 nsIf the effective access time is 10% greater than the cache access time, what is the hit ratio H?(A) 89%(B) 91%(...