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Temat: Re: [PHP-DB] <PK><FK>

> However, the answer about needing to define a PK before you can use it as
> FK being a limitation of SQL may have been a bit misleading (sorry,
>  It is more of a building block of relational theory rather than a
> limitation of SQL.

It depends from POW: for database designer it's a part of RDB theory, but
for programmer it's a limitation. That's why programmers need CASE tools ;-)


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