What is the difference between MongoDB and…

The main differences between MongoDB and PostgreSQL lie in their data models, database types, and approaches to data handling:

1. Data Model:

MongoDB: Document-oriented, stores data in BSON format (binary JSON). Flexible schema, does not require a predefined structure.
PostgreSQL: Relational, stores data in tables with a strictly defined structure (rows and columns). Requires schema definition before adding data.

2. Database Type:

MongoDB: NoSQL. Optimized for horizontal scaling and working with unstructured or semi-structured data.
PostgreSQL: Relational SQL. Optimized for transactions, data integrity, and complex queries with JOIN.

3. Schema:

MongoDB: Dynamic/schema-less (schemaless). Documents in the same collection can have different structures.
PostgreSQL: Strict schema. All rows in a table must conform to defined columns and data types.

4. Scalability:

MongoDB: Easily scalable horizontally through sharding (dividing data into groups by key).
PostgreSQL: Mainly scales vertically (by increasing server resources). Horizontal scaling is more complex and requires additional solutions.

5. ACID Transaction Support:

MongoDB: Supports multi-document ACID transactions starting from version 4.0, but they are more limited compared to relational databases.
PostgreSQL: Full support for ACID transactions. Ensures high data integrity in complex scenarios.

6. Query Language:

7. Use Cases:

MongoDB: Applications with rapidly changing data requirements, big data, IoT, CMS, product catalogs.
PostgreSQL: Financial systems, ERP systems, applications requiring complex queries and strict data integrity.

What is the difference between MongoDB and PostgreSQL?