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Medical Clinic ERD

Posted on 2011-03-20
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Using the Crow’s Foot notation, create an ERD that can be implemented for a medical clinic, using the following business rules:
•      A patient can make many appointments with one or more doctors in the clinic, and a doctor can accept appointments with many patients.  However, each appointment is made with only one doctor and one patient.
•      Emergency cases do not require an appointment.  However, for appointment management purposes, an emergency is entered in the appointment book as “unscheduled.”
•      If kept, an appointment yields a visit with the doctor specified in the appointment.  The visit yields a diagnosis and, when appropriate, treatment.
•      With each visit, the patient’s records are updated to provide a medical history.
•      Each patient visit creates a bill.  Each patient visit is billed by one doctor, and each doctor can bill many patients.
•      Each bill must be paid.  However, a bill may be paid in many installments, and a payment may cover more than one bill.
•      A patient may pay the bill directly, or the bill may be the basis for a claim submitted to an insurance company.
•      If the bill is paid by an insurance company, the deductible is submitted to the patient for payment.  
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by:rrococi2
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This looks like a school assignment I had at Boston University.  Are you in school?
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by:14th_Vermont_Volunteer
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Yes Sir, I most certainly am and I'm not liking this course.
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by:Lowfatspread
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hint :

go through the business rules highlighting all nouns and verbs

these will form the basis of the entities and processes that are required...

once you have identified these order them into a set of hierarchies / related objects/subjects

then its time for a second look at the nouns in particular and see if you can identitfy
any supertypes or subtypes  - (e.g. would it make sense to identify doctors and patients as people with there many common attributes....)

then look at the verbs/processes and see what if any business/work entities you will also need to provide... e.g. what does Bill and Installment actually practically mean --- from a business audit/legal view point what will be required to enable you to track and implement these processes (bank accounts, contacts, debt recovery agencies, etc.... ) At this point it is usual to engage the "business owners" in further discussions (via a business analyst) as to what are the basic requirements of the final systems to be implemented....


Data Modelling is fun...., and a vital component of the whole system / application design process...

Good Luck
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by:ASta
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Best way paper, pencil and draw. :)))
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rrococi2 earned 350 total points
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by:14th_Vermont_Volunteer
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Both answers were very helpful.  Thanks guys.
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by:bruno2g
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               mcsa
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