Updates Through Views
A view is defined using the
where <query expression> is any legal query expression.
The view created is given the name
To create a view
of all branches and their customers:
Having defined a view, we can now use it to refer to the virtual relation it creates. View names can appear anywhere a relation name can.
We can now find all customers of the SFU branch by writing
Page created and maintained by
Osmar R. Zaï ane
Last Update: Wed Sep 20 15:45:57 PDT 1995