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Star schema VS Snowflake schema
Posted: Fri Apr 03, 2009 4:15 am
by siva7143
Can snowflake schema be later converted into Star schema?
a) Yes
b) No
Thanks in advance......
![Rolling Eyes :roll:](./images/smilies/icon_rolleyes.gif)
Posted: Fri Apr 03, 2009 5:21 am
by ray.wurlod
Maybe, by denormalizing the dimension. But, if so, why have the snowflakes in the first place?
When's the interview?
Actually, a better answer to this question is always "yes", if one is happy to ignore questions of efficiency. For example the holiday table associated with a time dimension is typically a snowflake, or even many if you have separate holiday tables for separate countries.
Posted: Fri Apr 03, 2009 7:09 am
by chulett
Ah, there it is.
![Wink :wink:](./images/smilies/icon_wink.gif)