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Build an Entity Relationship Diagram(ERD) for the following hospital scenario. For your Patient entity show its attributes . Highlight the key...

Build an Entity Relationship Diagram(ERD) for the following hospital scenario. For your Patient entity show its attributes . Highlight the key attribute in red.

Patients are treated in a single ward by the doctors assigned to them. Usually each patient will be assigned a single doctor, but in rare cases they will have two. Healthcare Assistants also attend to the patients, a number of these are associated with each ward. Initially the system will be concerned solely with drug treatment. Each patient is required to take a variety of drugs a certain number of times per day and for varying lengths of time.

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