a correction in Qn 1 of homework

[Subbarao Kambhampati <rao@asu.edu>]

In qn 1 of the homework, the description seems to imply that the
mediator schema cannot export room number in which the course is
taught. If that is the case, then you will have trouble writing the
source which exports room number as a materialized view. 

So, I suggest that you make the mediator schema inclusive and allow
the room number too (in general, you are better off putting all the
attributes you can think of into mediator schema in LAV.)

Rao