Answer:
I think it is 1 because that is all that works for me
I have a PlayStation as well
For the view of Exercise 4.18, explain why the database system would not allow a tuple to be inserted into the database through this view.
For reference
For the database of Figure 4.12, write a query to find the ID of each employee with no manager. Note that an employee may simply have no manager listed or may have a null manager. Write your query using an outer join and then write it again using no outer join at all.
OUTER JOIN
select e.ID from employee e left outer join manages m on e.ID = m.ID
where m.manager_id is null;
NO OUTER
select e.ID from employee e where e.ID not in (select m.ID from manages m) or e.ID in (select m.ID from manages m where m.manager_id is null);
I'd go with yes, but are you doing something malicious or just being nosey?
Answer:
ERP.
Explanation:
Enterprise Resource Planning Is the software platform for bidirectional applications. The main objective of ERP it shared the database system and connects the enterprise as a whole so that data can be reached the once and made accessible to all users.
The main advantage of Enterprise Resource Planning is that Enterprise cycle parallelization or optimization it also the boost performance of the organization and saving the time.
