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    What is Relational Database and Primary Key in Database?

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    What is relational database? What does it contain? What is the purpose of primary key in a database?

    © BrainMass Inc. brainmass.com October 9, 2019, 6:08 pm ad1c9bdddf
    https://brainmass.com/computer-science/databases/what-is-relational-database-and-primary-key-in-database-79414

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    Relational database is a collection of tables which contain information about relationship among entities. You need such a database to store and model real world informaiton such as banking, inventory, mailing list, etc.

    Each table ...

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    What is relational database? What does it contain? What is the purpose of primary key in a database?

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