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Using the Crow's Foot notation, create an Entity Relationship Diagram ( ERD ) that can be implemented for a medical clinic using the following business
Using the Crow's Foot notation, create an Entity Relationship Diagram ERD that can be implemented for a medical clinic using the following business rules:
a Patients are identified by their SSN and we also store their names and age.
b Each patient has one or several phone numbers stored in the database.
c Some patients in this clinic may not have any insurance.
d Some patients have one or two insurance policy identified by Insurance lD Each insurance policy has a start date. The insurance may be associated with several patients such as for spouses, children
e Doctors are identified by their SSN and we also store their names and specialty.
f Each patient has one primary care doctor. and we want to know the start date that the patient has been with her primary care Doctor. g Each doctor has at least one patient. Specify key attributes of each entity type and specify all the constraints mandatory or optional participation. Itomany, ItoI, manytomany on each relationship type.
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