✅ Introduction to CTEs – Understand the purpose and syntax of Common Table Expressions in SQL Server.

🔄 CTE Syntax Breakdown – Learn how to use the WITH clause to define temporary result sets.

📄 CTE vs. Derived Tables – Clear comparison showing how CTEs offer improved readability and reusability over nested subqueries.

📈 Using CTEs in Simple SELECT Queries – Build foundational skills using CTEs in basic queries.

🔗 CTEs with JOINS – Learn how to join CTEs with other tables for more complex query scenarios.

🧠 Code Clarity and Maintenance – Understand how CTEs improve query structure, especially in multi-step logic.

🕵️‍♂️ Nested and Chained CTEs – Introduction to multiple CTEs in a single query block for step-by-step transformation.

🔍 Debugging Made Easier – How CTEs simplify troubleshooting compared to deeply nested derived tables.

🧹 Cleaner Queries – Demonstrate how CTEs make SQL scripts more modular and easier to read.

📚 Real-World Use Cases – Practical examples to show where CTEs outperform traditional subqueries.

✅ Understanding Data Integrity – Learn the importance of enforcing valid, consistent, and accurate data in relational databases.

🔒 Types of Constraints Explained – Deep dive into PRIMARY KEY, FOREIGN KEY, UNIQUE, CHECK, and DEFAULT constraints.

🏗️ Creating Constraints – Syntax and examples for adding constraints during CREATE TABLE and using ALTER TABLE.

🧯 Dropping Constraints – Learn how to drop constraints temporarily for data correction or maintenance.

🔁 Restoring Constraints – Best practices to recreate constraints after temporary removal to preserve data integrity.

✏️ Altering Constraints – Modify existing constraints safely using ALTER TABLE and understand limitations.

🔄 Parent-Child Table Relationships – Explore how foreign key constraints link related tables and enforce referential integrity.

🚫 Effect on DELETE and UPDATE Operations – Understand constraint behavior with CASCADE, SET NULL, and NO ACTION options.

⚠️ Insert Violations and Prevention – How constraints prevent invalid INSERT operations and maintain consistency.

🔍 Practical Scenarios – Real-world examples showing how constraint violations can break integrity—