EG Supervisor manages supervisee . Check your relationships and entity types by trying to read them this way. If they don t make sense then change them. Individual relationships join together two or more individual entities. EG Jane Doe manages Fred Smith. .
All relationships are bi-directional.
Use relationship names that model real world relationships, not system processes. Has , Assigns , Logs , Generates , Processes , Stores and so on are bad relationship names if they refer to internal system processes. Relationships can have attributes. If something is Try and arrange entities and relationships from left to right and top to bottom, to make the diagram easier to read. Avoid recursive relationships where possible.