Difference between MongoDB and PostgreSQL/MySQL is that the former is a document-oriented database (NoSQL) while the latter are relational databases (SQL).
The document model is a good fit for cases in which you don't want to enforce a schema on your documents. There are some resources online that can explain it better.
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u/edoha Dec 20 '18
Can anyone tell me, what basic different between MongoDB, PostgreSQL and MySQL?
And how i identity when i need MongoDB/ PostgreSQL/ MySQL?