Question

2. Given the following business scenario, create a Crow’s Foot ERD using a specialization hierarchy if appropriate. Tiny Hospital keeps information on patients and hospital rooms. The system assigns each patient a patient ID number. In addition, the patient’s name and date of birth are recorded. Some patients are resident patients who spend at least one night in the hospital, and others are outpatients who are treated and released. Resident patients are assigned a room. Each room is identified by a room number. The system also stores the room type (private or semiprivate) and room fee. Over time, each room will have many patients. Each resident patient will stay in only one room. Every room must have had a patient, and every resident patient must have a room.

Answer 1

ER Diagram:

1. ER diagram is a logical representation of database.

2. It represents the relation among all the entities of the database.

ER diagram according the provided conditions:

Explanation:

• Table Patient used to hold the data about the each patient with all basic details.

• P_Id works as a primary key for the table Patient and Room_No work as a primary key for fetvhing the detail about room.

• Relationship used to categorized the patient type according their conditions.

• Entity Resident having one-to-one relationship with the table room.

• Table Room used to hold the data about the each room with all basic details.

• Room_No work as aprimary key for the table Room.