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KeyValue Databases

KeyValue Databases: A key-value database, also known as a key-value store, is the most flexible type of NoSQL database. Key-value databases have emerged as an alternative to many of the limitations of traditional relational databases, where data is structured in tables and the schema must be predefined. In a key-value store, there is no schema and the value of the data is opaque. Values are identified and accessed via a key, and stored values can be numbers, strings, counters, JSON, XML, HTML, binaries, images, short videos, and more. It is the most flexible NoSQL model because the application has complete control over what is stored in the value.

Source : digitalvidya.com