SQL Constraints Explained Clearly | Primary Key, Foreign Key, Unique, Check & Not Null
SQL Constraints Explained Clearly | Primary Key, Foreign Key, Unique, Check & Not Null
Want to understand SQL Constraints in a simple and practical way?
In this video, we explain what constraints are in SQL, why they are important, and how to use them with real examples.
📌 Topics Covered:
✔ What are Constraints in SQL
✔ NOT NULL Constraint
✔ UNIQUE Constraint
✔ PRIMARY KEY Constraint
✔ FOREIGN KEY Constraint
✔ CHECK Constraint
✔ DEFAULT Constraint
✔ Examples using CREATE TABLE
This video is perfect for beginners, students, interview preparation, and database developers.
👉 Watch till the end to fully master SQL constraints and avoid common mistakes!
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