A forth table that has four columns: its own primary key; three
foreign keys, one for each table. It is comparable to a many-to-many
relationship, but with three tables instead of just two.
class FourthTable(SQLObject):
first = ForeignKey("FirstTable")
second = ForeignKey("SecondTable")
third = ForeignKey("ThirdTable")
Not sure why you would want to do this. Perhaps there are relations
between any two table that should be flushed out first?
-Brian
On 10/13/07, Daniel Fetchinson <[EMAIL PROTECTED]> wrote:
> Hi list,
>
> This might be slightly off-topic since I'm about to ask a general
> design question, not in any way sqlobject specific but please bear
> with me.
>
> I have 3 kinds of objects and each kind is stored in its own table.
> Using the primary key of each table I can refer to each object in that
> particular table. Now what I would like to have is a kind of primary
> key for all 3 tables so that by refering to a single key I would be
> able to select 1 object out of the 3 tables. Right now selection out
> of the 3 tables goes by first picking a table and then selecting an
> object from that table but I would like to have an over-arching id for
> any object.
>
> What would be the best strategy for this?
>
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