Question

I asked this question earlier but couldnt find answer.. First of all sorry for my english..

I have a form include 80 checkboxes : these checkboxes are options for car ,
example for car ; Mp3 Player | ABS | Airbag | Air conditioning |

User should select his own cars options from checkboxes and post it.. The question is ? How should i store them in database? By the way user should able to update them later..

Should i use implode() and store them like

option1 , option2 , option34 , option45 , option66 ,  in one column

or like that

Car_ID | Options | 
155      option2
155      option34
155      option45
155      option66 

( How should they update them? )

or open 80 column in database and like ,

Car_ID | Option1 | Option2 | Option3 | Option4 | Option5
155         true     true      false     false     false

Answer 1

You should have an options table, a users table, and a user_options table that relates them. This will allow you to easily modify the options as necessary and add or remove options.

Users
user_id,username

Options
option_id,option_name

User Options
option_id,user_id

if each user can have multiple cars it should be:

Users
user_id,username

Options
option_id,option_name

Cars
car_id,car_name

User_Car_Options
user_id,car_id,option_id