SQL Constraints | Beginner to Pro #shorts #sqlinterviewquestions #sqltips #sqlshorts

What are SQL Constraints?
In this quick video, you'll learn how SQL constraints help protect your data by enforcing rules at the table level.

🔥 Covered in just 60 seconds:

✅ NOT NULL
✅ UNIQUE
✅ PRIMARY KEY
✅ FOREIGN KEY
✅ CHECK
✅ DEFAULT

Whether you're new to SQL or brushing up for an interview, this short gives you everything you need to know about constraints — with simple examples!

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Видео SQL Constraints | Beginner to Pro #shorts #sqlinterviewquestions #sqltips #sqlshorts канала en