hy all,
i have a problem to generate my database.
I just want to make a very simple test with two classes with one to many relation between this two classes
class 1:
class person with id,name,firstname,birthdate
my primary keys are name,firstname and birthdate
unique key id
class 2:
class treatment with id,typetreatment,begindate,...
my primary keys are typetreatement,begindate...;
unique key id
now i want to join my to classes with a third table (cause it's one to many relation)
with different unique Id but i can't?
I can join but i must use primary key why???
i want to use id unique key.
how can i make that??
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