RE: Supertypes?

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От Christian Marschalek
Тема RE: Supertypes?
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Msg-id 000101c0b6c6$0653a9e0$0200a8c0@server
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Ответ на Supertypes?  ("Christian Marschalek" <cm@chello.at>)
Ответы Re: Supertypes?
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> Pg DOES support it!
Oh... My fault :o)

> However, it doesn't really have anything
> to do with data redundancy.  Data redundancy means storing
> the same DATA in more than one table meaning that if it
> changes in one table, you have to update all of the other
> tables.  That's not the same as inheritance which means you
> can use a common base_table with additions to child tables as
> necessary.
Well we've learned that when you have lets say five tables which all
contain name, adresse, city and so on you also have a form of
redundancy... Can be wrong, though ;o)

chris


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