SQL Constraints Explained with Examples | PRIMARY KEY, FOREIGN KEY, UNIQUE, NOT NULL, CHECK
Are you struggling to understand SQL Constraints? 🤔 Don’t worry—this video makes it super simple and beginner-friendly! 🚀
In this tutorial, we’ll cover:
✅ What are Constraints in SQL?
✅ PRIMARY KEY constraint explained with example
✅ FOREIGN KEY constraint with real-life usage
✅ UNIQUE constraint for avoiding duplicates
✅ NOT NULL constraint to prevent empty values
✅ CHECK constraint to validate data rules
By the end of this video, you’ll know how to use constraints to build **clean, reliable, and error-free databases**.
📌 Watch till the end for a *quick recap* that will boost your SQL knowledge.
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