Skill Topic · Cinematic

📘 SQL Constraints - Data Rules Lagana

Constraints wo rules hain jo table ke data ko control karte hain — galat ya invalid data database…

Overview

📘 SQL Constraints - Data Rules Lagana — Quick Facts

📌

#: Constraint

🎯

1: NOT NULL

⚡

2: UNIQUE

🔑

3: PRIMARY KEY

Topic 1

📌 Constraints Kya Hain?

🤖 Constraints data ke upar rules hain jo accuracy aur reliability ensure karte hain. Yeh…

Topic 2

📌 SQL Me Kaunse Constraints Hain?

🧠 | # | Constraint | Kya Karta Hai | |---|-----------|--------------| | 1 | NOT NULL |…

Topic 3

📌 Column Level vs Table Level

💡 `sql -- Column Level Constraint: CREATE TABLE Customers ( CustomerID INT NOT NULL, --…

Topic 4

📌 CREATE TABLE with All Constraints

⚡ `sql CREATE TABLE Employees ( -- NOT NULL + PRIMARY KEY EmpID INT NOT NULL PRIMARY KEY,…

Topic 5

📌 Named Constraints (Recommended!)

🎯 `sql CREATE TABLE Products ( ProductID INT, ProductName VARCHAR(100) NOT NULL, Price…

Topic 6

📌 ALTER TABLE se Constraints Add/Drop

🔮 Add: `sql ALTER TABLE Customers ADD CONSTRAINT pk_customer PRIMARY KEY (CustomerID);…

Topic 7

📌 All Constraints at a Glance

🌐 ` ┌────────────────┬─────────────┬────────────────────────┐ │ Constraint │ NULL Allow? │…

Topic 8

📌 Real-World Example

📊 `sql -- E-Commerce Database with Full Constraints: CREATE TABLE Categories ( CategoryID…

Topic 9

✅ Summary

🤖 KEY POINTS: - Constraints = database level rules jo data integrity ensure karte hain -…

Quick Quiz

Quiz — Question 1

📘 SQL Constraints - Data Rules Lagana ka sabse sahi definition kya hai?

Quick Quiz

Quiz — Question 2

📘 SQL Constraints - Data Rules Lagana ka '1' kya hai?

Complete! 🎉

📘 SQL Constraints - Data Rules Lagana Complete!

Aliens School · HIEN · Cinematic Knowledge

✅