A database is used by organizations to store their data, and allow their employees to access, update, and manage it. Organizations use a Database Management System, also known as a DBMS to control, store, organization and retrieve that data for the users through end-user applications. There are multiple types of database, such as flat-file, network, and hierarchical. The most widely used database is the relational database, which is based on a mathematical theory. A relational database stores data in relations, which are tables, that store data in rows or tuples and columns or attributes. The relational database is based on the relational model and consists of a relational schema which contains the database objects.
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