Use a Schema Designer to create schemas for the following problems:
- City Library System
- a user can check out books
- books have one or more authors
- books belong to a library branch
- a book can be reserved by a user
- Movie Showtimes
- a movie has many showtimes at various theaters
- a theater has many showtimes for various movies
- a user can purchase a ticket for a specific showtime
- Flash Cards
- a deck has many cards
- a user can play a round
- a user has a response to each card
- a user can see his/her score for each round played
- Social Media App
- a user can post statuses
- a user can post pictures
- a user can comment on statuses
- a user can comment on pictures
- a user can have many friends (need help with self-referential association?or this blog post)
- Survey App
- a user can create one or more surveys
- a survey has many questions
- each question has many choices
- a user can take a survey
- a user can choose a response to a question