Monday, December 8, 2008

Re: question about hw q3

Sorry for the confusion. You can (and should) have room information in the mediator schema.

[I didn't specifically mean to require that mediator schema not have room attribute (it would seem rather silly to have a course schema that doesn't give room information). ]


On Mon, Dec 8, 2008 at 9:31 AM, Mijung Kim <> wrote:
Hi Professor,

I have a question regarding hw q3.

In the question,

"We have another source called ASU-CS-S02-Catalog- which exports the set of CS courses being taught in Spring 2003, the instructor who will be teaching them, and the rooms in which the classes will be taught. Write this source too as a materialized view on the mediator schema."

According to the mediator schema, we don't have "room" attribute. In this case, should we update mediator schema adding the room to it?

Could you enlighten me on this??



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