CS312 – Data Base Modeling and Design Assignment No.2 SOLUTION BY VU ROCKY 100% CORRECT

In this video, we walk you through the process of normalizing a Hospital Management System (HMS) database from an unnormalized table to the Third Normal Form (3NF). The scenario involves a multi-specialty hospital (ABC Healthcare) that manages patient and doctor records, appointments, billing, staff schedules, and more. The initial database is plagued with data redundancy, anomalies, and inconsistency, leading to inefficiencies.

Key Points Covered:
Anomalies in the Unnormalized Table: We identify issues such as data redundancy, update anomalies, insertion anomalies, and deletion anomalies present in the original HMS database structure.
Normalization Process:
1NF (First Normal Form): Converting the table to 1NF by ensuring atomic values and eliminating repeating groups.
2NF (Second Normal Form): Achieving 2NF by removing partial dependencies.
3NF (Third Normal Form): Final normalization to 3NF by eliminating transitive dependencies and organizing the data into separate, logical tables.
Final Database Schema: A detailed explanation of the normalized database structure, which includes separate tables for Patient_Appointment, Doctor, Staff, and Medicine, ensuring improved data integrity and better performance.
Why This Is Important:
Normalization ensures that data is stored efficiently, without redundancy, and with consistency. By applying 1NF, 2NF, and 3NF, the database becomes more reliable, easier to maintain, and scalable for future needs. This process is essential for building robust database systems for real-world applications, especially in healthcare where data integrity is critical.


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