What is a database, Database Management System

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What is a database?

Database - Basically in simple terms A database is a collection of inter related data and/or information stored so which it is available to several users for different purposes.


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What is candidate key? Candidate Key - A candidate key of an entity set is a minimal superkey, which uniquely identifies each row in the relation.

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What is a value? A data value is used for identity. This form of identity is used in relational systems.eg: The primary key value of a tuple recognize the tuple.

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