Answers:

In the given system, a database is used to keep track of a patient’s details such as their diagnosis details, laboratory report, along with their personal details. In the hospital system, every patient must be under the supervision of a nurse leader, this nurse leader is responsible for managing the treatment of the patient. The details of the nurse leader in the system must contain their personal information, their shift timings, and the details of medication such as any errors in administering doses to the patient. Hence, in this system the relevant entities are the nurse leader and the patient. The chosen attributes for a patient include their personal information such as their name, phone number, address, the ward number in which they are admitted, the details of the diagnosis provided to the patient, and details of their laboratory report. The chosen attributes of the nurse leader entity also include their personal details such as their name, phone number, address, joining date (to figure out their experience in the system), their working hours (or shift timing), and details of any errors in medication. These attributes were chosen to provide full functionality in the system and maintain the details of each patient along with the diagnosis provided to them. The primary attribute for nurse leader and patient is their id, as through these id’s a patient or a nurse leader can be uniquely identified. Every patient in the system must be overlooked by a nurse leader, however, a nurse leader may be responsible for multiple patients. The cardinality of this relation is one-to-many.

The Created Database Model Consists Of These Two Entities With The Aforementioned Relationship Between Them Where a Nurse Leader Is Responsible For Managing each patient in the system. The cardinality of this relationship is one nurse leader to many patients where every patient must have a nurse leader. In the patient table in the database, the nurse leader id is used as a foreign key and must not contain any null values, this integrity check ensures that every patient must have a nurse leader managing them.

Bibliography

Sahatqija, K., Ajdari, J., Zenuni, X., Raufi, B., & Ismaili, F. (2018, May). Comparison between relational and NOSQL databases. In 2018 41st international convention on information and communication technology, electronics and microelectronics (MIPRO) (pp. 0216-0221). IEEE. 10.23919/MIPRO.2018.8400041

Puja, I., Poscic, P., & Jaksic, D. (2019, May). Overview and Comparison of Several elational Database Modelling Metodologies and Notations. In 2019 42nd International Convention on Information and Communication Technology, Electronics and Microelectronics (MIPRO) (pp. 1641-1646). IEEE. 10.23919/MIPRO.2019.8756667