old_contents: from flock import db
  
  class Event(db.Model):
  	
  	id = db.Column(db.Integer, primary_key=True)
  
  	def __init__(self):
  		pass
  
new_contents: from flock import db
  
  class Event(db.Model):
  	
  	id = db.Column(db.Integer, primary_key=True)
  	owner_id = db.Column(db.Integer, foreign_key('user.id'), primary_key=True)
  
  	def __init__(self):
  		pass
  
subject: Add owner as a primary, foreign key