type Calendar @model {
  id: ID!
  name: String!
  months: [Month] @connection
}

type Month @model {
  id: ID!
  number: Int!
  days: [Day] @connection
  calendar: Calendar @connection
}

type Day @model {
  id: ID!
  number: Int!
  reservation: [Reservation] @connection
  month: Month @connection
}

type Reservation @model {
  id: ID!
  hour: Int!
  client: Client! @connection
  day: Day @connection
}

type Client @model @key(fields: ["id", "email"]) {
  id: ID!
  email: String!
}