如何在sql数据库中存储复选框值?

我正在开发一个访客系统..

访客可以一次访问很多地方..

所以,我使用复选框来检查他们想要的地方去..

在我的系统中有3个选项的地方..

他们必须至少检查一个复选框..

so ,如何存储此复选框值?

请帮帮我....

I am developing a visitor system..
visitor can visit to many place in one time..
so, I use check box to checked the place they want to go..
in my system there are 3 option of place..
they must checked at least 1 check box..
so, how to store this check box value?
please help me....



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