Re: design

On Tue, 30 Jan 2001, Jeff wrote:

> I have a design question. Lets say we want to keep track of users and
> their respective snail mail addresses. Each user can have up to 4
> different mailing address. Is it better to have all this information in
> one table.

Only if you have mostly 4 address users. And then it questionable.

> Or is it better to have a user table and an address table,
> and have the user id as a foreign key in the address table?

Yes! Though at first reading I thought you had your primary key and
foreign key reversed.

Primary key user_id (???) in the user table.

Foreign key references user(user_id) in the address table.

You might want to think of an ordering attribute (column) in the address
table so you can select a preferred address when only on is wanted.

Have a normalized day,
Rod
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