postgresql - Prisma2 pyramida内省返回外键的怪异值

我有两个表，User和Relationship。这些表用于存储父子关系。我在用Postgres

// schema.sql

CREATE TABLE "public"."Relationships" (
    id SERIAL PRIMARY KEY NOT NULL,
    parent_id INT NOT NULL,
    FOREIGN KEY (parent_id) REFERENCES "User" (id),
    child_id INT NOT NULL,
    FOREIGN KEY (child_id) REFERENCES "User" (id)
)

CREATE TABLE "public"."User" (
    id SERIAL PRIMARY KEY NOT NULL,
    name VARCHAR(128) NOT NULL,
    email VARCHAR(128) UNIQUE,
    password VARCHAR(128) NOT NULL,
    isChild BOOLEAN NOT NULL DEFAULT false
    created_at TIMESTAMP NOT NULL DEFAULT NOW();
);  

当我运行npx prisma introspect时，schema.prisma文件中将返回以下内容。

// schema.prisma

generator client {
  provider = "prisma-client-js"
}

datasource db {
  provider = "postgresql"
  url      = env("DATABASE_URL")
}

model Relationships {
  child_id                           Int
  id                                 Int  @default(autoincrement()) @id
  parent_id                          Int
  User_Relationships_child_idToUser  User @relation("Relationships_child_idToUser", fields: [child_id], references: [id])
  User_Relationships_parent_idToUser User @relation("Relationships_parent_idToUser", fields: [parent_id], references: [id])
}

model User {
  created_at                                  DateTime        @default(now())
  email                                       String?         @unique
  id                                          Int             @default(autoincrement()) @id
  ischild                                     Boolean         @default(false)
  name                                        String?
  password                                    String
  Relationships_Relationships_child_idToUser  Relationships[] @relation("Relationships_child_idToUser")
  Relationships_Relationships_parent_idToUser Relationships[] @relation("Relationships_parent_idToUser")
}

我不明白什么是，为什么User_Relationships_child_idToUser以及User_Relationships_parent_idToUser它们为什么不只是Prisma文档教程中为外键显示的简单语法。