https://github.com/pngo1997/sql-and-pl-sql-database-management-practice

Practice SQL and PL/SQL for database management, data querying, and trigger implementation.
https://github.com/pngo1997/sql-and-pl-sql-database-management-practice

database-management python query sql sqlite trigger

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Practice SQL and PL/SQL for database management, data querying, and trigger implementation.

• Host: GitHub
• URL: https://github.com/pngo1997/sql-and-pl-sql-database-management-practice
• Owner: pngo1997
• Created: 2025-01-30T20:16:29.000Z (21 days ago)
• Default Branch: main
• Last Pushed: 2025-01-30T20:41:12.000Z (21 days ago)
• Last Synced: 2025-01-30T21:24:26.213Z (21 days ago)
• Topics: database-management, python, query, sql, sqlite, trigger
• Language: Jupyter Notebook
• Homepage:
• Size: 19.5 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# 🏗️ SQL and PL/SQL Database Management

## 📜 Overview  

This project focuses on SQL and PL/SQL for database management, data querying, and trigger implementation. It consists of **three parts**, covering **data handling using Pandas, PL/SQL procedural logic, and database triggers** for automatic constraint enforcement.  

## 🎯 Problem Explanation  

### **Part 1: Employee Data Analysis Using Pandas**  

The task involves working with **employee data (`employee.csv`)** using **Pandas in Python**. The objectives include:  

1. **Read and explore the dataset** (dimensions, column names).  

2. **Rename columns** for clarity.  

3. **Filter employees by gender** (e.g., all male employees).  

4. **Find the highest salary among female employees**.  

5. **Group salaries by middle initial** and print out all salaries in each group.  

### **Part 2: Student Score Computation Using PL/SQL**  

This part involves working with the **`STUDENT`** and **`WEIGHTS`** tables to compute student grades dynamically.  

- **Tables Defined:**  

  - `STUDENT` (ID, Name, Midterm, Final, Homework).  

  - `WEIGHTS` (MidPct, FinPct, HWPct).  

- **PL/SQL Program Requirements:**  

  - Extract the grading weights from `WEIGHTS`.  

  - Compute the **overall score** using the formula:  

    ```

    Overall Score = (Midterm * MidPct/100) + (Final * FinPct/100) + (Homework * HWPct/100)

    ```

  - Assign letter grades based on computed scores:  

    ```

    90-100 = A  

    80-89.99 = B  

    65-79.99 = C  

    0-64.99 = F  

    ```

  - Output **each student's overall score and corresponding letter grade**.