Re: Redefining an existing Table Schema for Foreign Key Constraint - Question

Hallo Harald,

Am 2008-11-03 13:41:52, schrieb Harald Fuchs:
> In article <20294223(dot)post(at)talk(dot)nabble(dot)com>,
> Brian714 <bndang(at)uci(dot)edu> writes:
> > Customers Table
> > id:integer -- primary key
> > first_name:varchar(50)
> > last_name:varchar(50)
> > cc_id:integer references Creditcards.id
> > address:varchar(200)
> > email:varchar(50)
> > password:varchar(20)
> This is the usual 1:n relationship, but I think you got it backwards.
> There are two questions to ask:
> 1. Are there customers with more than one credit card?

This could be a problem for the above table...

> 2. Are there credit cards owned by more than one customer?

CreditCards are personaly and sometimes (in France) I need an ID card to
prove, that I am the holder...

So how can one credit card can have more then one owner?

Thanks, Greetings and nice Day/Evening
Michelle Konzack
Systemadministrator
24V Electronic Engineer
Tamay Dogan Network
Debian GNU/Linux Consultant

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