if a student can only have 1 dorm then:

Table Students
SIDPK  SID  DormPK

Table Dorms
DormPK   Dorm   Fee

if a student can have many dorms then:

Table Students
SIDPK  SID 

Table Dorms
DormPK   Dorm   Fee

Table StudentDormHist
SIDPK    DormPK


--- In [email protected], "tam_yehia" <[EMAIL PROTECTED]> wrote:
>
> Hi all, i need your help
>
> if i have the following relation
>
> SID                Dorm                 Fee
> 100-10-6789        Randolph             3200
> 123-65-4321        Ingersoll            3100
> 136-22-3333        Randolph             3200
> 567-33-4444        Pitkin               3100
>
> how to convert this relation into 3NF, what are the new relation, and
> the PK for each.
>
> Thanks
>






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