search for: sales_rep_info

...ers (such as administrators) won''t need the extra info. b) add as many common attributes (such as first_name, last_name, date of birth) to the Users table and create another table for additional information specific to the particular user type (ie add primary_market, essay, etc to a "sales_rep_info" table) c) ?? right now I''m using option B, but what I find confusing is if, for example, I have a has_and_belongs_to_many relationship for sales reps, such as primary_market (can be a combination of "automotive", "electrical", "industrial", etc), do I...