type User {
    id: ID! @unique
    email: String! @unique
    name: String!
    abbreviation: String!
    password: String!
    comments: [Comment]! @relation(name: "CommentAuthor", onDelete: CASCADE)
}

type Comment {
    id: ID! @unique
    text: String!
    createdAt: DateTime!
    author: User! @relation(name: "CommentAuthor", onDelete: SET_NULL)
}

type Training {
    id: ID! @unique
    title: String!
    content: String!
    createdAt: DateTime!
    trainingDate: DateTime!
    participants: [User]!
    ratings: [Rating]!
}

type Rating {
    id: ID! @unique
    user: User!
    value: Int!
    comment: String!
}