RAM Manufacturing, Inc. is planning to purchase a new ERP system. Jim, who works in revenue recognition, is creating an entity relationship diagram as part of this project. Jim has learned that all RAM Manufacturing invoices are related to one and only one sales order. However, a sales order may have no invoices or many invoices. Draw the entity relationship diagram between the sales order and invoices entities.

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The Answer of RAM Manufacturing, Inc. is planning to purchase a new ERP system. Jim, who works in revenue recognition, is creating an entity relationship diagram as part of this project. Jim has learned that all RAM Manufacturing invoices are related to one and only one sales order. However, a sales order may have no invoices or many invoices. Draw the entity relationship diagram between the sales order and invoices entities.