erd where entites are customer,payment,inventory,authentication,customer support,hermes store.relationship builder between hermes and customer. what is important here is that the process is purchasing a birkin bag from hermes, and the entity relationship diagram should depict this process from start to finish, from deciding on a bag to making the order to the store to giving shipment info, to getting bill, to making payment, to asking for support if needed from customer support to building a relationship with hermes to even get one of their luxury bags