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Data Bases > Database Theory > Re: Identifying...
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Re: Identifying candidate keys and primary keys

by rpost@[EMAIL PROTECTED] (rpost) Apr 16, 2008 at 06:59 PM

Brian Selzer wrote:

>Unless you can identify the functional dependencies, you won't be able to

>identify the candidate keys.  If you don't know enough about the subject 
>matter (or weren't provided with that information as part of the 
>assignment), then you might as well join Bluto.

Perhaps they want the student to write these assumptions down explicitly.
Perhaps they want to make the student realize that without such explicit
assumptions the validity of the model cannot be determined.

-- 
Reinier
 




 11 Posts in Topic:
Identifying candidate keys and primary keys
"noagbodjivictor@[EM  2008-04-13 02:29:27 
Re: Identifying candidate keys and primary keys
"Brian Selzer"   2008-04-13 07:05:20 
Re: Identifying candidate keys and primary keys
"David Cressey"  2008-04-13 11:51:23 
Re: Identifying candidate keys and primary keys
"noagbodjivictor@[EM  2008-04-13 13:02:41 
Re: Identifying candidate keys and primary keys
"David Cressey"  2008-04-13 21:40:53 
Re: Identifying candidate keys and primary keys
Bernard Peek <bap@[EMA  2008-04-16 22:07:18 
Re: Identifying candidate keys and primary keys
"Brian Selzer"   2008-04-13 21:50:31 
Re: Identifying candidate keys and primary keys
rpost@[EMAIL PROTECTED]   2008-04-16 18:59:12 
Re: Identifying candidate keys and primary keys
"Brian Selzer"   2008-04-17 01:05:35 
Re: Identifying candidate keys and primary keys
Philipp Post <Post.Phi  2008-04-15 08:01:04 
Re: Identifying candidate keys and primary keys
JOG <jog@[EMAIL PROTEC  2008-04-19 18:45:58 

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tan12V112 Sat Nov 22 5:42:57 CST 2008.