CHECK & DEFAULT Constraints in SQL | SQL Tutorial for Beginners
In this SQL tutorial, you'll learn CHECK Constraint and DEFAULT Constraint in SQL with practical MySQL examples.
We'll understand how CHECK Constraint validates data before it is stored and how DEFAULT Constraint automatically assigns values when no value is provided. You'll also see real-world use cases and hands-on demonstrations using the Voters and Customers tables.
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⏱️ Timestamps
00:00 Introduction
00:30 What is CHECK Constraint?
02:18 What is DEFAULT Constraint?
03:55 CHECK Constraint Practical Demo
08:03 DEFAULT Constraint Practical Demo
13:45 Summary
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📌 Topics Covered
✅ What is a CHECK Constraint?
✅ Practical Demo using Voters Table
✅ What is a DEFAULT Constraint?
✅ Practical Demo using Customers Table
✅ Real-world Use Cases
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