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What are NoSQL databases? What are the different types of NoSQL databases?

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A NoSQL database provides a mechanism for storage and retrieval of data that is modeled in means other than the tabular relations used in relational databases (like SQL, Oracle, etc.).

Types of NoSQL databases:

1 Document Oriented

2 Key Value

3 Graph

4 Column Oriented
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asked Oct 12, 2019 in Big Data | Hadoop by RShastri