I am working on a project of classified ads site.
I have 12 main categories, and their items are 142, Like vehicles have cars, scooters, bikes, etc. Mobiles Phones have mobiles, tablets, accessories.
Now should i use few tables and use Json ?
Or should i create separate tables for each item (142 tables) ?
Currently i have decided 142 tables to save myself from relations and joins and heavy coding.
Which way is correct or suggest another one. What are the pros and cons ? I have search a lot but didn't got anything that answers my question.