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
The tab keys are used to advance the cursor to the next tab stop.
Answer:
Java provide all the ADTs you need,therefore you do not need to create any newones.
This statement is not true.
Explanation:
ADTs are those data types which we use but we didn't know their inner working that is how it is working what is happening inside.It is commonly used for Data Structures for example:- In stack we use push and pop operations to insert and to delete element from a stack respectively but we didn't know how it is happening inside.How the stack is implemented and etc.Java provides most of the ADT's but not all.
Direct Current Power regulates current/voltage flow, similar function as unregulated or regulated, but is smaller, cheaper, and more reliable.
<h3>What is Direct Current Power?</h3>
- In contrast to the flow of a river, direct current is a technique in which electricity constantly flows in the same direction. It speaks about the flow of electricity produced by batteries, solar cells, and other sources.
- Alternating current (AC), on the other hand, is a technique in which the positive and negative sides are consistently swapped at regular intervals, changing the direction of the electricity flow in accordance.
- This is the electricity that comes from a generator or a plug-in.
- Alternating current is used to transmit both the electricity generated at power plants and the electricity delivered to houses.
To learn more about Direct Current Power, refer:
brainly.com/question/1402412
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Answer:
b
Explanation:
a cpu is made from silicon chip
