RDBMS vs NoSQL — Idhu fight illa, mindset difference. Ellarum kekra question: “Bro which one is best?” Correct question illa. Correct question: “En use case ku edhu correct?” 🔹 RDBMS (MySQL, PostgreSQL, Oracle) Proper table structure Fixed schema Strong consistency (ACID) Joins super powerful Banking, finance, ERP maari strict systems ku perfect Un data clean-a relational-a irundha, transaction miss aaga koodadhu na → RDBMS king 👑 🔹 NoSQL (MongoDB, Cassandra, DynamoDB) Flexible schema Horizontal scaling easy Huge traffic handle pannum Distributed systems friendly Social media, logs, IoT, real-time apps ku super Un data daily change aagudhu, crores of users irukaanga, availability mukkiyam na → NoSQL mass 🔥 Real truth enna na: 👉 RDBMS consistency first. 👉 NoSQL scalability first. Onnu strict school principal maari. Innonnu cool startup founder maari. But real-world la smart engineers enna panraanga? Payment data → SQL User activity logs → NoSQL Analytics → Da...