Joins & Division | GATE DA 2027 DBMS & Data Warehousing in Hindi

Natural join chalaya. Data bilkul theek tha. Jawab aaya: zero rows. ⏱ CHAPTERS 0:00 Introduction 0:59 The data every operator will run on today 2:02 Natural join on sid: 3 rows survive, 2 tuples dangle 3:34 The formula 4:23 The idea 5:13 Theta join: the product forms 9 pairs, the condition keeps 3 6:35 One ladder: product, theta, equi, natural 7:39 The idea: airport 8:30 Emp and Dept share dno AND name: every pair fails, 0 rows 9:39 The trap 10:22 The idea: plate 11:07 Same data, four joins: 3, 4, 4, 5 12:06 The idea: operator 12:49 Takes has 8 tuples; Required has just DB and OS 13:38 Worked example 15:00 The idea: option 15:46 The formula: notation 17:20 Real GATE question 18:54 The idea: expression 19:40 Real GATE question: division 21:25 GATE DA 2026 Q42 (MCQ, 2 marks): official key D 23:11 Recap ✅ REAL GATE QUESTIONS SOLVED IN THIS VIDEO • GATE DA 2025 Q17 (answer: C) • GATE DA 2025 Q62 (answer: 1 to 1) • GATE DA 2026 Q42 (answer: D) Har answer official GATE answer key se verify kiya gaya hai. ⬅ PICHHLA VIDEO: Relational Algebra I — 5 GATE PYQs Solved | GATE DA 2027 in Hindi ➡ AGLA VIDEO: Joins & Division — 5 GATE PYQs Solved | GATE DA 2027 in Hindi 📚 POORA COURSE — 220 videos, syllabus order mein:    • GATE DA 2027 Complete Course in Hindi — Fu...   🎯 GATE DA 2027 ki taiyari kaise shuru karein:    • How to Prepare for GATE DA 2027   ▶ CHANNEL:    / @datarekha   Ye poora course bilkul free hai — har topic, har exercise video. Sabko same level par seekhne aur compete karne ka haq hai.