Create an Entity Relationship Diagram (ERD) for the following functions:

Patient Management

New

Existing

Former

Appointment Management

Check/Create

Create Reminder

Cancel Reminder

Patient Billing

Co-Pay Receipt

Return Receipt

Employee Management

New

Existing

Former

Accounts Receivable

Coverage Verified

Invoice created

Payment Sent

Order Returned

Lab Management

Add Sample

Update Sample

Transfer to lab

Pharmacy Management

Write prescription

Update prescription

Send to pharmacy

Supplies Management

Order item

Transfer to Inventory item

Accounts Payable

Inventory verified

Place order

Order received

Invoice Paid

Return Order

Insurance company

Fill out agreement

Issue agreement

Focus on the design and development of a data model and a relational database management system for a small medical practice with no user interface design consideration.