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I have a reservation table
and a Preference table
And now i have a dropdownlist from wich i chose a preference when i am making a reservation.what i want to do is to use checkbox when i am making reservation so that i can select more preferences.Is this posibile ?how can i save two preferences in same reservation table.
You’d have to create a linking table with two columns: ReservationID and Preference_Id (possibly Preference_Quantity as well). ReservationID and Preference_Id would constitute the unique key for the table. This table would have FK constraints to the two original tables.
You’d have to remove Preference_Id and Preference_Quantity from the reservation table