Business Rules

Question 1

Given the information below, create the fully labeled Crow’s Foot ERD using a specialization hierarchy where appropriate (use Visio). The ERD must contain all primary keys, foreign keys, and main attributes. Business rules are defined as follows:

  • At a hospital, each patient is classified as either a resident patient or an outpatient. All patients have common attributes – ID, first and last name, and diagnosis – and unique attributes that are specific to their groups. The list of such attributes includes but is not limited to the following: a summary of the treatment received in the hospital (resident patients) and the checkback date (outpatients).
  • In addition, resident patients are classified as patients who need a routine check up, patients who need a surgery, patients who need both a check up and a surgery. Each group is characterized by unique attributes (for instance, a surgery date, etc.).
  • Each patient creates a record in the HOURS table that keeps track of the total number of hours a patient spent in the hospital. The table also includes the “COMMENT” field where any additional information may be recorded. One record is related to one patient only.

Question 2

Data warehousing systems are designed to support or streamline certain business functions. In this module, we examine data warehousing in retail and inventory management. What are some strategies for addressing business problems and needs in this area? Who typically forms the stakeholders group in this segment?

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