Answer:
D. a potential hazard
Explanation:
Abrupt changes in road surface or the shape of the road may indicate a potential hazard.
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
Statement two and three is correct.
Statement 1 is incorrect. A relative reference changes when a formula is copied to another cell while Absolute references remain constant. However, it is safe to say that an absolute address can be preceded by a $ sign before both the row and the column values. It is designated by the addition of a dollar sign either before the column reference, the row reference, or both. Statement C is also correct. A mixed reference is a combination of relative and absolute reference and the formula (= A1 + $B$2) is an example of a mixed cell reference.
Answer:
The client
Explanation:
On a client/server network, THE CLIENT computer initiates the process of assigning an IP address through DHCP. This is because "The Client" computer will serve as the Domain controller in which other computers of the network can find. Hence, The Client computer initiates the process of assigning IP addresses through DHCP to achieve this.
Though, in some case. A user can manually assign the IP address to computer if it is not through DHCP
