{"id":26049658,"url":"https://github.com/mahmoudwal27/sql-data-analysis","last_synced_at":"2026-02-13T00:04:39.608Z","repository":{"id":278023253,"uuid":"934252733","full_name":"mahmoudwal27/SQL-Data-Analysis","owner":"mahmoudwal27","description":"This project demonstrates SQL operations for managing student enrollments, including creating tables, inserting data, updating records, and running queries to analyze student and course information. 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It includes **data insertion, updates, deletions, queries, and analytics** to extract valuable insights from academic data.  \n\n## 📌 Project Workflow  \n\n### 1️⃣ Database \u0026 Tables Creation  \n- **Students** – Stores student details (ID, name, DOB, email, enrollment date).  \n- **Courses** – Stores course details (ID, name, department, credits).  \n- **Enrollments** – Tracks student-course enrollments, grades, and semesters.  \n\n### 2️⃣ Data Insertion  \n- Populated tables with sample student, course, and enrollment data.  \n\n### 3️⃣ Data Manipulation  \n- **Updating Student Info** – Modified email records.  \n- **Deleting Records** – Removed students based on conditions.  \n\n### 4️⃣ Data Retrieval \u0026 Analysis  \n- **Student Queries**  \n  - Retrieve student details, count, and enrollment dates.  \n  - List students with no enrollments.  \n  - Sort students by enrollment date.  \n\n- **Course Queries**  \n  - Fetch course details, total credits per department.  \n  - Find courses with no enrollments.  \n  - Get the most popular courses based on enrollments.  \n\n- **Enrollment \u0026 Performance Queries**  \n  - Join student and course tables to get detailed enrollment info.  \n  - Calculate GPA based on grading scale.  \n  - Find top-performing students and courses.  \n  - Analyze semester-wise enrollments.  \n\n## 🛠 Tools \u0026 Technologies Used  \n- **Microsoft SQL Server**  \n- **SQL (DDL, DML, Joins, Aggregations, CTEs, Views)**  \n\n## 📊 Key Insights  \n✅ Which students have the highest number of enrollments?  \n✅ What is the average GPA for each course?  \n✅ Which department offers the most credit hours?  \n✅ What are the most enrolled courses per semester?  \n\nThis project **efficiently manages academic records** and provides **actionable insights** for student and course performance! 🚀  \n","funding_links":[],"categories":[],"sub_categories":[],"project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fmahmoudwal27%2Fsql-data-analysis","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fmahmoudwal27%2Fsql-data-analysis","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fmahmoudwal27%2Fsql-data-analysis/lists"}