Can you generate relationships with Symfony (using Doctrine)?

At the moment, if I do the following, it just generates the schema.yml:

./symfony doctrine:build-schema

But that doesn't generate the relationships.

Do I have to manually add those into the schema.yml or is there a way to generate them? And if I have to manually enter it in, won't they be over-written next time I do a doctrine:build-schema (to refresh the schema with new tables, etc)?

Here is the schema.yml:

Companies:
  connection: doctrine
  tableName: companies
  columns:
    company_id:
      type: integer(4)
      fixed: false
      unsigned: false
      primary: true
      autoincrement: true
    company_name:
      type: string(100)
      fixed: false
          unsigned: false
      primary: false
      notnull: true
      autoincrement: false
    company_logo:
      type: string(100)
      fixed: false
      unsigned: false
      primary: false
      notnull: true
      autoincrement: false
    company_date_added:
      type: timestamp(25)
      fixed: false
      unsigned: false
      primary: false
      notnull: true
      autoincrement: false
Credentials:
  connection: doctrine
  tableName: credentials
  columns:
    credential_id:
      type: integer(4)
      fixed: false
      unsigned: false
      primary: true
      autoincrement: true
    credential_name:
      type: string(100)
      fixed: false
      unsigned: false
      primary: false
      notnull: true
      autoincrement: false
    company_id:
      type: integer(4)
      fixed: false
      unsigned: false
      primary: false
      notnull: true
      autoincrement: false
    credential_date_added:
      type: timestamp(25)
      fixed: false
      unsigned: false
      primary: false
      default: '0000-00-00 00:00:00'
      notnull: true
      autoincrement: false
Groups:
  connection: doctrine
  tableName: groups
  columns:
    group_id:
      type: integer(4)
      fixed: false
      unsigned: false
      primary: true
      autoincrement: true
    group_name:
      type: string(100)
      fixed: false
      unsigned: false
      primary: false
      notnull: true
      autoincrement: false
    company_id:
      type: integer(4)
      fixed: false
      unsigned: false
      primary: false
      notnull: true
      autoincrement: false
    group_date_added:
      type: timestamp(25)
      fixed: false
      unsigned: false
      primary: false
      default: '0000-00-00 00:00:00'
      notnull: true
      autoincrement: false
GroupsCredentials:
  connection: doctrine
  tableName: groups_credentials
  columns:
    group_credential_id:
      type: integer(4)
      fixed: false
      unsigned: false
      primary: true
      autoincrement: true
    group_id:
      type: integer(4)
      fixed: false
      unsigned: false
      primary: false
      notnull: true
      autoincrement: false
    credential_id:
      type: integer(4)
      fixed: false
      unsigned: false
      primary: false
      notnull: true
      autoincrement: false
    group_credential_date_added:
      type: integer(4)
      fixed: false
      unsigned: false
      primary: false
      notnull: true
      autoincrement: false
Users:
  connection: doctrine
  tableName: users
  columns:
    user_id:
      type: integer(4)
      fixed: false
      unsigned: false
      primary: true
      autoincrement: true
    user_username:
      type: string(100)
      fixed: false
      unsigned: false
      primary: false
      notnull: true
      autoincrement: false
    user_password:
      type: string(100)
      fixed: false
      unsigned: false
      primary: false
      notnull: true
      autoincrement: false
    user_email:
      type: string(100)
      fixed: false
      unsigned: false
      primary: false
      notnull: true
      autoincrement: false
    company_id:
      type: integer(4)
      fixed: false
      unsigned: false
      primary: false
      notnull: true
      autoincrement: false
    user_date_added:
      type: timestamp(25)
      fixed: false
      unsigned: false
      primary: false
      notnull: true
      autoincrement开发者_开发知识库: false
UsersCredentials:
  connection: doctrine
  tableName: users_credentials
  columns:
    user_credential_id:
      type: integer(4)
      fixed: false
      unsigned: false
      primary: true
      autoincrement: true
    user_id:
      type: integer(4)
      fixed: false
      unsigned: false
      primary: false
      notnull: true
      autoincrement: false
    credential_id:
      type: integer(4)
      fixed: false
      unsigned: false
      primary: false
      notnull: true
      autoincrement: false
    user_credential_date_added:
      type: timestamp(25)
      fixed: false
      unsigned: false
      primary: false
      default: '0000-00-00 00:00:00'
      notnull: true
      autoincrement: false

I ended up fixing the issue.

The relationships weren't setup properly in the MySQL DB - stupid mistake on my part.