SQL Constraints Explained Clearly | Primary Key, Foreign Key, Unique, Check & Not Null скачать в хорошем качестве

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! 📢 Subscribe for more SQL tutorials and database concepts 🚀