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How do I build a DB for this?

I am building a page where every week, weekdays are shown along with timeslots for every day. (like, 9:00-12:00, 12:00-4:00)

I want users to select some of those timeslots (perhaps using radio buttons)

So in other words, every week, I log in, I see a page where the days of the current week are shown, each day has timeslots under. I’m going to select what I see fit, and submit it. My choices will be stored in a DB.