Please help. There is a problem I have tried to resolve for some time now. I want to come up with a pattern where i have a table with advertisements on a web platform. These advertisements shall be owned either by individual users (accounts) or by an entity which represents a group of users (accounts) the members of which have permissions on the advertisement. There shall also be a manager of the advertisement. When the advertisement is owned by a group, the accounts dont matter and the info for the group shall be displayed. My problem is that I always come with anti patterns for this schema. Can you suggest me something? Your help will be highly appreciated.

closed as unclear what you're asking by mustaccio, McNets, Philᵀᴹ, MDCCL, Gaius Feb 3 at 14:33

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