In this article, I show my total design for the athletic club exercise. You could have totally figured that out from the synopsis for this post; however, since you, dear reader, only remember 30% of the crap that you read, I’ve now upped my chances of sticking in your cerebrum just a little bit longer.

The requirements

  • People join the club to become members and get invoiced monthly a flat fee and participation fees for classes
  • Participation fees for classes consist of a prorated amount of the instructor’s hourly rate and a percentage of the cost of the equipment used by participants in the class
  • Record member purchases of food and beverages from the club for rewards
  • For every ten dollars spent on food and beverages from the club, the member receives a one dollar credit on their next invoice.
  • Members RSVP for classes and their arrival is recorded
  • Instructors schedule rooms and equipment for classes

The nouns

Moment-Interval (Pink)
Moment-Interval Detail (Pink)
Role (Yellow) Thing (Green) Description (Blue)
class
invoice
reward
member purchase
reservation
member arrival
membership
payment
member
instructor
person
room
reward
equipment
equipment

The design

full atheletic club dnc

Click image to enlarge

When you see multiple occurrences of Person, Member, and Instructor in that diagram, those are not different classes. I just want to show each of the transaction participants.