How is data stored in a NoSQL database?

Question

NoSQL databases store data in documents rather than relational tables. Accordingly, we classify them as "not only SQL" and subdivide them by a variety of flexible data models. Types of NoSQL databases include pure document databases, key-value stores, wide-column databases, and graph databases.

In which way data is stored in the NoSQL server?

Wide-column stores: Wide-column NoSQL databases store data in tables with rows and columns similar to RDBMS, but names and formats of columns can vary from row to row across the table. Wide-column databases group columns of related data together.

How do NoSQL stores and manage data?

NoSQL data stores offer flexible schemas or are sometimes completely schema-free and are designed to handle a wide variety of data structures [11, 12, 24]. Current solution data models can be divided into four categories: key-value stores, document stores, column-family stores, and graph databases.

In which format data is stored in NoSQL?

The format used could be JSON, XML, YAML etc. The JSON format is the format of choice for NoSQL databases, and for good reason. A JSON document is simply more compact and more readable. JSON (JavaScript Object Notation) is a data representation format formulated by the JavaScript programming language.

Can NoSQL store structured data?

NoSQL databases can store structured, semi-structured and unstructured data. Their main advantages focus on semi-structured (JSON, XML, not all fields are known) and unstructured. But, you can safely store BLOB in a RDBMS, e. g., Oracle Database and many others relational databases.

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