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In recent years, different kinds of databases have emerged that do not adhere to the traditional...

In recent years, different kinds of databases have emerged that do not adhere to the traditional relational model. These databases are often referred to as NoSQL databases. How are these databases distinct from relational databases? What is driving their popularity?

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The traditional relational model is a standard database model used to store data in the form of rows and columns and SQL or Structure query language is used for storing and also retrieving the data which is stored in the tables. The different types of RDBMS are:
Oracle
MySQL
MS SQL and more.

The databases which are different from the traditional relational model and thus are known as NoSQL databases. NoSQL database is the unstructured and schema-less data storage mechanism which is used to store data in multiple collection and node and also does not require any table schema and also supports limited types of joins.
Compared to the RDBMS, the NoSQL databases have many advantages of benefits such as:
NoSQL databases are easily and highly scalable. RDBMS are vertically scalable means that to scale database we have to increase server hardware power but NoSQL databases are horizontally scalable and thus increases scalability by adding more machine to the pool of the resources.
It is less expensive to maintain the NoSQL databases than RDBMS.
NoSQL databases cost and implementations are low and most of the databases are open source thus making it cost-effective.
NoSQL is a schema-less model and thus data can be inserted in this type of database without any need for the schema.

Thus the advantages of the NoSQL databases over the RDBMS are driving the popularity of the NoSQL databases. NoSQL databases can be used in data engineering and big data projects and techniques as they deal with much more unstructured data and information rather than RDBMS.

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