title: Entity Relationship Diagram - Multiplicities
body: <p>I have done a lot of reading into multiplicities for ER diagrams, and I believe I have an understanding of what each requirement is, but as someone self studying with the internet and a textbook, it is hard to see where I have made mistakes.</p>
  <p>Any feedback on this would be greatly appreciated.</p>
  <p>Cinema - There are multiple cinema complexes with their name, location and contact number list.</p>
  <p>Theatres - There are 4 in each cinema. Two types are available and each one is identified by a screen number.</p>
  <p>Seats - Many seats in each theatre are determined by the row number, seat number and the seat type (comfort level).</p>
  <p>Purchase - Tickets are to be purchased at the cinema complex. This will include screening date, time and seat number.</p>
  <p>Members - Members are defined by their name and email.</p>
  <p>Signup - Many members sign up with or without a discount at the cinema of their choice.</p>
  <p><img src="https://i.stack.imgur.com/CI0cl.png" alt="ER Diagram" /></p>