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My DB model is shown in the picture. Does this design look good? I welcome comments and ideas.

Description:

  • User role table keeps track of all possible roles a user can have

  • Role table has all possible roles such as admin, user, trainer

  • Since user relationships are predictable, I can make
    partyRelationship read-only with pre-populated values. Exmaple - From role=admin, to role= user , From role=trainer, to role= user

Requirements:

  1. A user can have multiple roles such as admin, trainer.
  2. A user can be related to another user in more than one way.

    enter image description here

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