What is a Foreign Key Constraint? Understanding Primary & Foreign Keys
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What is a Foreign Key Constraint? Understanding Primary & Foreign Keys
In this short video we'll cover what foreign keys are, why they are important, how they differ from Primary Keys and how they function in a relational database. 00:00 Introduction 0:21 Example of Foreign Keys in a database 0:32 What is a Primary key? 1:19 What is a foreign key? 2:02 What do foreign keys do? 3:27 Review of Foreign Keys In this ...
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