First, the patient requests an appointment at the Doctor's office to receive the prescription. The patient's contact information should be stored in a database. After having a prescription, the patient places the order for the glasses. The patient must provide the prescription and the frame choice when placing the order. The order information is stored in a database. The frame information is also stored in an independent database. Once the glasses have been made, a notification is sent to the patient from the store for a fitting and pay for the glasses, i.e., proceed with the purchase process. Finally, a purchase receipt is generated, and the payment information goes to the order database. Note: consider there is only one external entity for this system. Create the context and level 0 diagrams. +

First, the patient requests an appointment at the Doctor's office to receive the prescription. The patient's contact information should be stored in a database. After having a prescription, the patient places the order for the glasses. The patient must provide the prescription and the frame choice when placing the order. The order information is stored in a database. The frame information is also stored in an independent database. Once the glasses have been made, a notification is sent to the patient from the store for a fitting and pay for the glasses, ie., proceed with the purchase process. Finally, a purchase receipt is generated, and the payment information goes to the order database. Note: consider there is only one external entity for this system. Create the context and level 0 diagrams