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#1 (**permalink**) 02-29-2008, 03:37 AM

Hi,

I am designing a table for classrooms with many features. Following is
the detail of the table (let's say the name of table is CRoom):

1. Room Name (key)
2. Building name (foreign key)
3. Capacity
4. Chairs
5. T-arm chairs
6. Tables
7. Desks
8. Lectern
9. 35 mm slide projector
10. Dual 35 mm slide projector
11. 3/4" video player
12. 1/2" video player
13. Chalkboard
14. Markerboard
......

My questions are:
a. Should I put everything in the same table?
or
b. If there is chairs in a classroom then there will be no T-arm
chairs there,
vice versa. So should I create a sepearte table for chairs and
t-arm chairs
and use the key for this as a foreign key in the CRoom table?
c. For number 11 and 12, some classrooms have only 3/4" video player,
some
classrooms have only 1/2" video player and some classrooms have
both.
Should I create another table for them and set value 1 for 3/4"
video player
2 for 1/2" video player and 3 for both? Then use the value 1, 2, 3
in the
CRoom table to represent the three differnt situations. If this is
not
proper, then how should I deal with this one?

Thanks a lot in advance.

#2 (**permalink**) 02-29-2008, 03:38 AM

>> I am designing a table for classrooms with many features. <<

Some of the attributes are part of the room itself, like square
footage, maximum allowed seating, and chalkboards that are bolted to
the walls. You can put those attributes into the Classrooms table.
Things that can be moved around (slide projector, video player) would
be in other tables and assigned to classrooms by an inventory location
table.

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