Q78: How do you choose between relational databases and MongoDB in Node.js?
Use SQL (e.g., PostgreSQL) for strict ACID compliance, fixed schemas, and complex relations. Use MongoDB for flexible document structures, rapid prototyping, and horizontal scalability.
Key Takeaways
- SQL offers strict relational consistency and structured schema guarantees.
- NoSQL offers flexible document schemas and easier horizontal scaling.
Knowledge Check
Which object mapping library is commonly paired with MongoDB in Node.js applications?