Hallo Harald, Am 2008-11-03 13:41:52, schrieb Harald Fuchs: > In article <[EMAIL PROTECTED]>, > Brian714 <[EMAIL PROTECTED]> 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
--
Linux-User #280138 with the Linux Counter, http://counter.li.org/
##################### Debian GNU/Linux Consultant #####################
Michelle Konzack Apt. 917 ICQ #328449886
+49/177/9351947 50, rue de Soultz MSN LinuxMichi
+33/6/61925193 67100 Strasbourg/France IRC #Debian (irc.icq.com)
signature.pgp
Description: Digital signature
