SQL vs NoSQL Explained | Which Database Should You Use? | Day 12

In Day 12 of the Software Architecture & System Design Fundamentals series, presented by Siddhant Samarai, we understand the difference between SQL and NoSQL databases and when to use each one. This session starts with a quick recap of databases, then explains two ways of storing data: fixed Excel-sheet style data and flexible document-style data. It also covers SQL tables, rows, columns, schema, relationships, NoSQL documents, MongoDB collections, embedded data, reference data, and how to decide whether an application should use SQL, NoSQL, or both. Topics covered: Quick recap of databases Fixed data vs flexible data What is SQL? Tables, rows and columns SQL schema Relationships in databases Popular SQL databases: PostgreSQL, MySQL, SQLite, SQL Server What is NoSQL? NoSQL data models MongoDB collections, documents and fields SQL vs NoSQL comparison Fixed schema vs flexible schema Embedded data vs reference data When to use SQL When to use NoSQL Can one app use both SQL and NoSQL? Polyglot persistence in real applications Key takeaway: Use SQL when data is structured, consistent and relationship-heavy. Use NoSQL when data is flexible, changing frequently or document-based. #SQL #NoSQL #SQLvsNoSQL #Database #DatabaseDesign #MongoDB #PostgreSQL #MySQL #SystemDesign #SoftwareArchitecture #BackendDevelopment #WebDevelopment #FullStackDevelopment #MERNStack #DataModeling #JASIQLabs #RealWorkStudio