4.21
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.
I think there is an error with the question.
There is no view in Exercise 4.18.
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.
I think there is an error with the question.
There is no view in Exercise 4.18.