A NoSQL database is a database that doesn't use traditional relational database methods. NoSQL databases have different approaches to the storage of information, and often make it easier for complex or distributed systems to access database information.
In traditional relational databases, data exists in set tables and is accessed by SQL or structured career language commands. By contrast, NoSQL databases are built in a number of different ways, for example, with key/value stores, document storage methods, graph methods, or object store methods. Some of these databases may handle structured query language as a means of retrieving data. Many of them are designed for performance, scalability, flexibility and complexity, but may lack a superior build for immediate data consistency. However, on the whole, the use of NoSQL is increasing, partly because of the use of these tools with big data and real-time Web systems.
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