What are the differences between MongoDB and PostgreSQL?

What are the differences between MongoDB and PostgreSQL?

MongoDB is a NoSQL database that stores data in flexible, JSON-like documents, while PostgreSQL is a relational database that uses structured tables. MongoDB is great for unstructured data and scalability, whereas PostgreSQL excels in complex queries and data integrity.

Which one is better for a web application?

It depends on your application's needs. If you require flexibility and scalability, MongoDB might be better. For applications needing complex transactions and strong data integrity, PostgreSQL is often preferred.

Can you give examples of when to use each?

Sure! Use MongoDB for applications like content management systems or real-time analytics where data structure can change. Use PostgreSQL for financial applications or systems requiring complex queries and relationships.

What about performance and scalability?

MongoDB generally offers better performance for large volumes of unstructured data and can scale horizontally easily. PostgreSQL can handle large datasets too, but scaling may require more effort and is typically vertical.