An ER diagram for a retail store consists of entities such as product, customer, order, and employee whose relations are like this: Customer places an order and the employee takes care of the order placed. Each entity includes unique attributes, including the name of the product, the amount charged, and customer contact details, among other things like order date. Thus, this shows how the data exists in the store and how it is interconnected. It results in proper information management by ensuring that all activities run smoothly including tracking sales, controlling stocks, and offering services to clients.
