The proper design decision there (if Mary's phone number and her
family (the Smith's) phone number will /always/ be the same) is to
store the data only once - avoiding duplication. This is what Juanjo
is saying. Since mary.family = Smith, mary.family.telephone_home =
Mary's phone number.
If you
Yes, but if mary is a Person and Smith is a Family, and mary belongs
to Smith Family (that is mary.family = Smith), how to change
mary.hometelephone if Smith.hometelephone change?
Thanks a lot,
Xan.
On Jul 6, 10:02 pm, Juanjo Conti <[EMAIL PROTECTED]> wrote:
> I you want your data to be normaliz
I you want your data to be normalized, telephone_home char(9) should not
be an attribute of Person.
If mary is a Person you always can do:
mary.family.telephone_home to get her telephone_home.
Juanjo
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mi blog: http://www.juanjoconti.com.ar
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Hi,
I think in family class and person class.
I put in pseudocode:
Class Family
string name
telephon-home char(9)
Class Person
string name
string surname
telephone-home char(9)
mobile-phone char(9)
Every Person belongs to a Family.
How can I update Per
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