Answer:
Option (C) is the correct option to the following question.
Explanation:
The following option is correct because the unit testing is the process of testing a single unit of software at a time, which means the testing of each and every program separately.
In simple words, Unit testing a process of testing in which the developer executes the single method or a function, statements or loop in the program of the software to checking is it working fine or not.
(A) Yes, because nobody is supposed to access non-work related sites during office hours.
Answer:
Try looking it up. If not, go with your gut!
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
