Week 6 Assignment

Modeling & Entity Relationship Diagramming

This assignment is to be completed individually, not by project teams

A. Draw a data model for the following entities, considering the entities as representing a system for a patient billing system and including only the attributes that would be appropriate for this context:

 Patient (age, name, hobbies, blood type, occupation, insurance carrier, address, phone)

 Insurance carrier (name, number of patients on plan, address, contact name, phone)

 Doctor (specialty, provider identification number, golf handicap, age, phone, name)

 Draw an entity relationship diagram (ERD) for the following situations:

B. Draw the ERD for the following situations:

  • Whenever new patients are seen for the first time they complete a patient information form that asks their name, address, phone number, and insurance carrier, all of which are stored in the patient information file. Patients can be signed up with only one carrier, but they must be signed up to be seen by the doctor. Each time a patient visits the doctor an insurance claim is sent to the carrier for payment. The claim must contain information about the visit, such as the date, purpose, and cost. It would be possible for a patient to submit two claims on the same day.
  • C. Examine the data models that you have created. How would the respective model change (if at all) on the basis of these corresponding new assumptions?

  • Two patients have the same first and last names
  • The patient has more than one insurance policy (a primary insurance and secondary insurance policy)
  • D. Create a set of metadata definitions/entries for your data model components

    E. Apply the steps of normalization to validate your data models.

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