SQL Triggers ka Funda

Understand how SQL Triggers works with Fullstackgada

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⏳ Database Triggers ka Concept

Trigger ek automated action hai, jo database mein koi event (INSERT, UPDATE, DELETE) hone par apne-aap chal jati hai.
/* Koi trigger type choose karo SQL example dekhne ke liye */
Trigger ki action ka natija yahan dikhega...

🔍 Triggers ke Fayde

1
Repetitive tasks ko automate karo
2
Business rules ko enforce karo
3
Audit logs maintain karo
4
Data ko consistent rakho

🏠 Gokuldham Analogy

Jethalal ka Style: Triggers ko real-world desi examples se samjhaate hain.

Gokuldham Society ka Example

🚪
Kisi table mein event (INSERT, UPDATE, DELETE) hone par trigger apne-aap kaam karta hai
🛎️
Jaise Gokuldham mein doorbell (trigger), koi aayega toh apne-aap baj jayega — tumhe manually check nahi karna padega
Event (INSERT/UPDATE/DELETE)
Table mein data change hote hi
Trigger Fires!
Automated action (notification, log, vagairah)

📝 Order & Notification Tables (Mock Data)

🛒 Orders Table

OrderID Customer Amount Status Samay

📩 Notifications Table

NotificationID Message ForUser Samay
INSERT Trigger: Naye order aane par notification apne-aap add hota hai

📝 Audit Logs Table

LogID Action Details Samay
UPDATE/DELETE Trigger: Order mein change hua toh log apne-aap add hota hai

💬 Jethalal aur Bhide ki Trigger wali Baat

"Baat Shuru Karo" pe click karke Jethalal-Bhide ki Triggers wali charcha shuru karo!

📌 Trigger ke Best Practices aur Warnings

Aspect ✅ Karo ❌ Mat Karo
Istemal Notifications, Logs, Data Consistency Complex Business Logic, Lambi Tasks
Performance Fast, Idempotent actions Heavy calculations, API calls, Nested Triggers
Testing Realistic data ke saath test karo Development mein ignore mat karo
Monitoring Errors ke liye monitor karo Bina dhyan ke chhod do
Jethalal ki Salah: Trigger ko halki-phulki cheezon ke liye hi use karo. Nahi toh website ki performance ka band baj jayega!