demo_app/my_platform/db/migrate/20160908104540_create_semester_calendars.your_platform.rb
# This migration comes from your_platform (originally 20160830121404)
class CreateSemesterCalendars < ActiveRecord::Migration[4.2]
def change
create_table :semester_calendars do |t|
t.integer :group_id
t.integer :year
t.integer :term
t.timestamps null: false
end
end
end