Posted by AlterEgo on 01/23/07 01:45

fireball,

Unless I am missing something, you've already definded a strong aggregation.
The child cannot exist without the parent - this is easy to enforce in the
database via referential integrity.

-- Bill


"fireball" <fireball@onet.kropka.eu> wrote in message
news:ep23rj$m4r$1@atlantis.news.tpi.pl...
>> _strong_ aggregation (=composition)
>> (weak) aggregation
>
>
> in other word's, how to make database data structure for _identyfying_
> aggregation (1..*).
>

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