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A non-relational database stores data in a non-tabular form, and tends to be more flexible than the traditional, SQL-based, relational database structures. It does not follow the relational model provided by traditional relational database management systems.
What is a non-relational database? A non-relational database is a type of database that doesn’t store data in tables but instead in whatever format is best for the type of data being stored.
Non-relational databases different from relational databases because they do not store data in tabular form. Instead, non-relational databases are based on data structures like documents and graphs. NoSQL databases also come in a variety of types based on their data models.
NoSQL (originally referring to "non- SQL " or "non-relational") [1] is an approach to database design that focuses on providing a mechanism for storage and retrieval of data that is modeled in means other than the tabular relations used in relational databases.
A non-relational database, sometimes called NoSQL (Not Only SQL), is any kind of database that doesn’t use the tables, fields, and columns structured data concept from relational databases. Non-relational databases have been designed with the cloud in mind, making them great at horizontal scaling.
The term ‘NoSQL’ refers to nonrelational types of databases, and these databases store data in a format that’s different from relational tables.
Non-relational databases (NoSQL databases) are data stores that are either schema-free, or have relaxed schemas that allow for changes in the data structure.