j*n
2 楼
Do you know what is Normalization?
j*n
5 楼
http://en.wikipedia.org/wiki/Data_modeling
【在 c**o 的大作中提到】![](/moin_static193/solenoid/img/up.png)
: know a little bit
【在 c**o 的大作中提到】
![](/moin_static193/solenoid/img/up.png)
: know a little bit
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