Answer:
The trigger code is given below
create trigger F1_Del
after delete on Friend
for each row
when exists (select * from Friend
where ID1 = Old.ID2 and ID2 = Old.ID1)
begin
delete from Friend
where (ID1 = Old.ID2 and ID2 = Old.ID1);
end
create trigger F1_Insert
after insert on Friend
for each row
when not exists (select * from Friend
where ID1 = New.ID2 and ID2 = New.ID1)
begin
insert into Friend values (New.ID2, New.ID1);
end
Answer:
e(a) = 0
e(b) = 10
e(c) = 110
e(d) = 1110
Explanation:
The Worst case will happen when f(a) > 2*f(b) ; f(b) > 2*f(c) ; f(c) > 2*f(d) ; f(d) > 2*f(e) and f(e) > 2*f(f).
Where f(x) is frequency of character x.
Lets consider the scenario when
f(a) = 0.555, f(b) = 0.25, f(c) = 0.12, f(d) = 0.05, f(e) = 0.02 and f(f) = 0.005
Please see attachment for image showing the steps of construction of Huffman tree:- see attachment
From the Huffman tree created, we can see that endcoding e() of each character are as follows:-
e(a) = 0
e(b) = 10
e(c) = 110
e(d) = 1110
e(e) = 11110
e(f) = 11111
So we can see that maximum length of encoding is 5 in this case.
The first commercially-available USB flash drive was the "ThumbDrive," produced by Singapore company Trek Technology in 2000. The drive had capacities of
8 MB
64 MB
1.44 MB
256 MB
Answer:
The answer is "increase in the power of public universities and increased appreciation for a liberal arts education". DARPA and Russia had nothing to do with this. Yes, the computer hardware improvement led to a growth, but National Science Foundation funding in 1981, and hence this is also not an option. And electrical power supply had nothing to do with this. Hence, the above answer. as the concept of the internet is based on liberal arts of education, to impart practical and intellectual skillsets, and hence to grow the social responsibility among the citizens of the whole world. Also, the power of public universities had a big role to play definitely, and this was confirmed from Pentagon as well then when the question was raised, is this due to the risk of a nuclear attack.
Many people think that the main reason was the nuclear attack threat, but that was not an issue definitely. Actually this was the time of liberalization, and the power of the public universities was increased. Hence, they got the chance to share the information of various sorts with the people, and in the process internet started expanding.
Explanation:
The answer is self explanatory.
The decimal form of the 11001101.00111001.10101001.01000010 binary ip address is 205.57.169.66.
An IP address is a binary number with 32 bits. The 32 bits are divided into four octets, which are groupings of 8 bits each. An IP address, however, is shown as a dotted decimal number (for example: 205.57. 32.9).
Memory regions are given binary addresses by the computer system. But in order to access a memory location, the system utilises a certain number of bits. We can address two memory regions with 1 bit. We can address 4 memory locations with 2 bits and 8 memory locations with 3 bits.
The 4 sets of 8 bits in each of the 4 directions are simply written down to create the 32-bit binary IP address.
Learn more about binary ip address:
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