Hi,

I am in the process of designing the data warehouse. My Question is can I
define the relationship between dimension tables. Like I have
country,customer and time zone dimension tables. Can I add relationship
between customer,country and time zone just to validate the data before load
whether the country and zip code is correct or should I integrate the
country and time zone with customer itself. If I integrate this. Is it going
to affect the performance. 'cos for every record it is going to validate all
these things before load.  

Can I create sequences for primary keys(fact tables and for some of the
dimenasion tables also). Is it OK to have a sequence as primary key. 

I need your expert views on this.

Regards,

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