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🔐 Topic 12: Transactions & ACID — Data Ki Safety!

"A transaction should be either fully completed or not done at all — there's no in between!" — ACID…

Overview

🔐 Topic 12: Transactions & ACID — Data Ki Safety! — Quick Facts

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Previous: Index

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[← Views & Stored Procedures](./11_SQL_ViewsProcedures.md): 📚 Course Index

Topic 1

1. Transaction Kya Hai?

📊 Transaction = Ek group of SQL statements jo sab ke sab ya to complete hon ya koi bhi na…

Topic 2

2. ACID Properties

💾 ` ┌──────────────────────────────────────────────────────┐ │ A.C.I.D = 4 Guarantees! │ │…

Topic 3

3. START TRANSACTION / COMMIT / ROLLBACK

🗄️ Basic Transaction: `sql -- ═══════════════════════════════════════════ -- Money Transfer:…

Topic 4

4. SAVEPOINT — Beech Me Save

📈 SAVEPOINT = Transaction ke beech me checkpoint set karo. Agar problem aaye to puri…

Topic 5

5. Auto Commit

🔍 MySQL me by default har statement ek transaction hota hai aur auto-commit ON hota hai:…

Topic 6

6. Isolation Levels

📉 Jab multiple users ek saath database use karein, to ek user ke changes doosre ko kab…

Topic 7

7. Deadlocks

🧮 Deadlock = Do transactions ek doosre ka lock release hone ka wait karein — dono stuck!…

Topic 8

8. Practical Examples

🌐 Example 1: Safe Money Transfer `sql -- ═══════════════════════════════════════════ --…

Topic 9

9. Transaction Best Practices

📊 ` ╔══════════════════════════════════════════════════════╗ ║ TRANSACTION BEST PRACTICES ║…

Topic 10

10. Key Points

💾 ` ╔══════════════════════════════════════════════════════╗ ║ 📝 KEY POINTS ║…

Topic 11

📝 Practice Exercises

🗄️ Exercise 1: Basic Transaction 1. START TRANSACTION se money transfer karo (A → B ₹1000)…

Topic 12

🧭 Navigation

📈 | Previous | Index | Next | |----------|-------|------| | ← Views & Stored Procedures | 📚…

Quick Quiz

Quiz — Question 1

🔐 Topic 12: Transactions & ACID — Data Ki Safety! ka sabse sahi definition kya hai?

Complete! 🎉

🔐 Topic 12: Transactions & ACID — Data Ki Safety! Complete!

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