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
There is overlap in the subjects of study in the different information technology disciplines is a True statement.
<h3>What is computer Science about?</h3>
There is found to be a lot of confusion about computer science and why it is said to be also called “computing”.
There is seen to be a lot of allied computing-related fields, such as information systems and that of computer engineering.
Hence, There is overlap in the subjects of study in the different information technology disciplines is a True statement. because those subject have different topics.
Learn more about information technology from
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In a a fieldwork experiment the scientist experimentally examines an intervention in the real world. A scientist might choose a fieldwork instead of laboratory experiment in order to answer for example some <span>behavioral questions. Often the best observations are made in the field.</span>
<span>A field experiment is more suitable for investigating a wider range of factors affecting the overall result.</span>
The famous saying is garbage in , garbage out .
