in db/migrate/20171227114314_create_customers.rb [1:14]
def change
create_table :customers do |t|
t.string :full_name, null: false
t.string :company_name, null: false
t.string :email, null: false
t.string :address, null: false
t.string :postal_code, null: false
t.string :city, null: false
t.string :country, null: false
t.timestamps
end
end