📘 Database – SQL (Projects & Practice)

SQL mastery through real projects and serious practice

🗝️ About This Course

This is the seventeenth course in your programming journey, after:

1️⃣ Programming Foundations – Level 1
2️⃣ Algorithms & Problem Solving – Level 1
3️⃣ Introduction to Programming with C++ – Level 1
4️⃣ Algorithms & Problem Solving – Level 1 (Clean Code Solutions)
5️⃣ Algorithms & Problem Solving – Level 2
6️⃣ Introduction to Programming Using C++ – Level 2
7️⃣ Algorithms & Problem Solving – Level 3
8️⃣ Algorithms & Problem Solving – Level 4
9️⃣ Foundations – Level 2
🔟 OOP as it Should Be – Concepts
1️⃣1️⃣ OOP as it Should Be – Applications
1️⃣2️⃣ Data Structures – Level 1
1️⃣3️⃣ Algorithms & Problem Solving – Level 5
1️⃣4️⃣ C# – Level 1
1️⃣5️⃣ Database – Level 1 (SQL: Concepts & Practice)
1️⃣6️⃣ OOP as It Should Be in C#

At this point in the roadmap, you already:

🔹 Understand databases deeply from a conceptual and design perspective

🔹 Know how to design databases using ERD and relational schema

🔹 Understand keys, constraints, normalization, and data integrity

🔹 Write correct SQL queries and understand how they work internally

🔹 Know how database design affects performance and scalability

Now comes the most important step:

👉 Turning knowledge into skill through practice.

This course exists because databases are mastered by doing, not by reading.

🔐 What Makes This Course Different?

🔹 This is a pure practical course — no theory repetition
🔹 Focuses on real projects and real problem sets
🔹 Forces you to think like a database designer and SQL professional
🔹 Covers real-world querying patterns used in production systems
🔹 Builds speed, confidence, and correctness in SQL

This course solves a common problem:

👉 Knowing SQL syntax but being slow and uncertain when facing real tasks.

📖 What You Will Practice and Master?

By the end of this course, you will be able to:

🔹 Design complete databases from requirements
🔹 Convert requirements into ERD and relational schemas
🔹 Apply normalization correctly in real projects
🔹 Work confidently with real datasets
🔹 Write complex SQL queries without hesitation

🔹 Master advanced querying through 50+ SQL problems, including:

▫️ Filtering, sorting, grouping, and aggregation
▫️ Complex joins and multi-table queries
▫️ Subqueries, views, and calculated columns
▫️ EXISTS, CASE, UNION, and conditional logic
▫️ Performance-aware querying patterns

🔹 Handle real scenarios such as:

▫️ Clinics, libraries, clubs, rentals, and online stores
▫️ Self-referential relationships (employees & managers)
▫️ GUID usage and data importing
▫️ Data extraction and restructuring

🧱 How This Course Is Structured?

🔹 Starts with database design projects (ERD-focused)
🔹 Moves into real SQL problem solving step by step
🔹 Problems increase gradually in difficulty
🔹 Solutions are explained clearly and professionally
🔹 Reinforces habits that scale to large databases

📌 This course is about fluency, not memorization.

🧑‍💻 Who This Course Is For?

✅ Students who completed Database – Level 1 (SQL: Concepts & Practice)
✅ Backend developers who want real SQL confidence
✅ Developers who want to work faster with databases
✅ Data Analysts, Data Scientists, and AI practitioners who need strong SQL skills
✅ Anyone who wants to stop struggling with real database tasks

❌ Not for learners who skip practice or avoid problem-solving

⚠️ What This Course Is NOT?

❌ Not a theory or concept course

❌ Not a shortcut to SQL mastery

❌ Not optional if you want real backend strength

📌 Practice is where database skills are built or broken.

🎓 Certification & Learning Outcomes

Upon completion, you will earn a

Certificate in Database – SQL (Projects & Practice), verifying your ability to:

🔹 Design databases from requirements
🔹 Write complex, correct SQL queries
🔹 Handle real datasets and real scenarios
🔹 Apply database knowledge in production-ready systems

🎓 Final Outcome

After completing this course, you will:

🔹 Feel confident when facing any SQL task
🔹 Design and query databases without hesitation
🔹 Write cleaner, faster, and more reliable SQL
🔹 Be fully prepared for advanced databases and backend systems

🧠 Databases are mastered by practice — this course is where that mastery happens.