Databases (RDBMS, NoSQL) difficulty with terminology

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I have some difficulty in understanding the terminology of NoSQL, RDBMS (where they belong, category etc).

From my understanding, you have a 'Database Management System', which has many types such as the relational and ER model. A RDBMS is based on the relational model.

Now you have NoSQL, which is a type of Database management system, which also has many types (key/value, document store etc.)

So basically, a DBMS and NoSQL are, term wise, on the same level but have different data models? Am I correct?

asked 11 secs ago

JustLearning

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Databases (RDBMS, NoSQL) difficulty with terminology