From Single drop-down to Multiple check-boxes

23-Jan-2020 1426
Follow the incremental approach below. Divide the entire problem into small sub-problems and deploy them one by one:define the new DB structurefill it in along with the old DB structure simultaneouslymigrate the old data to the new onedefine the new associations and make the code use themdrop the old DB structure and the code that’s not relevant anymore.
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